$ fc-conflist
+ /etc/fonts/conf.d/10-hinting-slight.conf: Set hintslight to hintstyle
+ /etc/fonts/conf.d/10-scale-bitmap-fonts.conf: Bitmap scaling
+ /etc/fonts/conf.d/10-yes-antialias.conf: Enable antialiasing
+ /etc/fonts/conf.d/11-lcdfilter-default.conf: Use lcddefault as default for LCD filter
+ /etc/fonts/conf.d/20-unhint-small-dejavu-lgc-sans-mono.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-dejavu-lgc-sans.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-dejavu-lgc-serif.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-dejavu-sans-mono.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-dejavu-sans.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-dejavu-serif.conf: No description
+ /etc/fonts/conf.d/20-unhint-small-vera.conf: Disable hinting for Bitstream Vera fonts when the size is less than 8ppem
+ /etc/fonts/conf.d/30-metric-aliases.conf: Set substitutions for similar/metric-compatible families
+ /etc/fonts/conf.d/30-win32-aliases.conf: No description
+ /etc/fonts/conf.d/40-nonlatin.conf: Set substitutions for non-Latin fonts
+ /etc/fonts/conf.d/45-generic.conf: Set substitutions for emoji/math fonts
+ /etc/fonts/conf.d/45-latin.conf: Set substitutions for Latin fonts
+ /etc/fonts/conf.d/46-noto-sans.conf: No description
+ /etc/fonts/conf.d/46-noto-serif.conf: No description
+ /etc/fonts/conf.d/48-spacing.conf: Add mono to the family when spacing is 100
+ /etc/fonts/conf.d/49-sansserif.conf: Add sans-serif to the family when no generic name
+ /home/sebastian/.config/fontconfig/conf.d/78-Reject.conf: No description
+ /home/sebastian/.config/fontconfig/fonts.conf: No description
+ /etc/fonts/conf.d/50-user.conf: Load per-user customization files
+ /etc/fonts/conf.d/51-local.conf: Load local customization file
+ /etc/fonts/conf.d/57-dejavu-sans-mono.conf: No description
+ /etc/fonts/conf.d/57-dejavu-sans.conf: No description
+ /etc/fonts/conf.d/57-dejavu-serif.conf: No description
+ /etc/fonts/conf.d/58-dejavu-lgc-sans-mono.conf: No description
+ /etc/fonts/conf.d/58-dejavu-lgc-sans.conf: No description
+ /etc/fonts/conf.d/58-dejavu-lgc-serif.conf: No description
+ /etc/fonts/conf.d/60-generic.conf: Set preferable fonts for emoji/math fonts
+ /etc/fonts/conf.d/60-latin.conf: Set preferable fonts for Latin
+ /etc/fonts/conf.d/62-caladea.conf: No description
+ /etc/fonts/conf.d/62-carlito.conf: No description
+ /etc/fonts/conf.d/65-droid-kufi.conf: No description
+ /etc/fonts/conf.d/65-droid-sans-mono.conf: No description
+ /etc/fonts/conf.d/65-droid-sans.conf: No description
+ /etc/fonts/conf.d/65-droid-serif.conf: No description
+ /etc/fonts/conf.d/65-fonts-persian.conf: No description
+ /etc/fonts/conf.d/65-nonlatin.conf: Set preferable fonts for non-Latin
+ /etc/fonts/conf.d/66-noto-sans.conf: No description
+ /etc/fonts/conf.d/66-noto-serif.conf: No description
+ /etc/fonts/conf.d/69-unifont.conf: No description
+ /etc/fonts/conf.d/69-urw-bookman.conf: No description
+ /etc/fonts/conf.d/69-urw-c059.conf: No description
+ /etc/fonts/conf.d/69-urw-d050000l.conf: No description
+ /etc/fonts/conf.d/69-urw-fallback-backwards.conf: No description
+ /etc/fonts/conf.d/69-urw-fallback-generics.conf: No description
+ /etc/fonts/conf.d/69-urw-fallback-specifics.conf: No description
+ /etc/fonts/conf.d/69-urw-gothic.conf: No description
+ /etc/fonts/conf.d/69-urw-nimbus-mono-ps.conf: No description
+ /etc/fonts/conf.d/69-urw-nimbus-roman.conf: No description
+ /etc/fonts/conf.d/69-urw-nimbus-sans.conf: No description
+ /etc/fonts/conf.d/69-urw-p052.conf: No description
+ /etc/fonts/conf.d/69-urw-standard-symbols-ps.conf: No description
+ /etc/fonts/conf.d/69-urw-z003.conf: No description
+ /etc/fonts/conf.d/80-delicious.conf: No description
+ /etc/fonts/conf.d/81-ubuntu.conf: No description
+ /etc/fonts/conf.d/90-synthetic.conf: No description
+ /etc/fonts/fonts.conf: Default configuration file
- /usr/share/fontconfig/conf.avail/05-reset-dirs-sample.conf: Re-define fonts dirs sample
- /usr/share/fontconfig/conf.avail/09-autohint-if-no-hinting.conf: Enable autohinter if font doesn't have any hinting
- /usr/share/fontconfig/conf.avail/10-autohint.conf: Enable autohinter
- /usr/share/fontconfig/conf.avail/10-hinting-full.conf: Set hintfull to hintstyle
- /usr/share/fontconfig/conf.avail/10-hinting-medium.conf: Set hintmedium to hintstyle
- /usr/share/fontconfig/conf.avail/10-hinting-none.conf: Set hintnone to hintstyle
- /usr/share/fontconfig/conf.avail/10-hinting-slight.conf: Set hintslight to hintstyle
- /usr/share/fontconfig/conf.avail/10-no-antialias.conf: Disable antialiasing
- /usr/share/fontconfig/conf.avail/10-scale-bitmap-fonts.conf: Bitmap scaling
- /usr/share/fontconfig/conf.avail/10-sub-pixel-bgr.conf: Enable sub-pixel rendering with the BGR stripes layout
- /usr/share/fontconfig/conf.avail/10-sub-pixel-none.conf: Disable sub-pixel rendering
- /usr/share/fontconfig/conf.avail/10-sub-pixel-rgb.conf: Enable sub-pixel rendering with the RGB stripes layout
- /usr/share/fontconfig/conf.avail/10-sub-pixel-vbgr.conf: Enable sub-pixel rendering with the vertical BGR stripes layout
- /usr/share/fontconfig/conf.avail/10-sub-pixel-vrgb.conf: Enable sub-pixel rendering with the vertical RGB stripes layout
- /usr/share/fontconfig/conf.avail/10-unhinted.conf: Disable hinting
- /usr/share/fontconfig/conf.avail/10-yes-antialias.conf: Enable antialiasing
- /usr/share/fontconfig/conf.avail/11-lcdfilter-default.conf: Use lcddefault as default for LCD filter
- /usr/share/fontconfig/conf.avail/11-lcdfilter-legacy.conf: Use lcdlegacy as default for LCD filter
- /usr/share/fontconfig/conf.avail/11-lcdfilter-light.conf: Use lcdlight as default for LCD filter
- /usr/share/fontconfig/conf.avail/11-lcdfilter-none.conf: Use lcdnone as default for LCD filter
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-lgc-sans-mono.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-lgc-sans.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-lgc-serif.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-sans-mono.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-sans.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-dejavu-serif.conf: No description
- /usr/share/fontconfig/conf.avail/20-unhint-small-vera.conf: Disable hinting for Bitstream Vera fonts when the size is less than 8ppem
- /usr/share/fontconfig/conf.avail/25-unhint-nonlatin.conf: Disable hinting for CJK fonts
- /usr/share/fontconfig/conf.avail/30-metric-aliases.conf: Set substitutions for similar/metric-compatible families
- /usr/share/fontconfig/conf.avail/30-win32-aliases.conf: No description
- /usr/share/fontconfig/conf.avail/35-lang-normalize.conf: No description
- /usr/share/fontconfig/conf.avail/40-nonlatin.conf: Set substitutions for non-Latin fonts
- /usr/share/fontconfig/conf.avail/45-Hack.conf: No description
- /usr/share/fontconfig/conf.avail/45-generic.conf: Set substitutions for emoji/math fonts
- /usr/share/fontconfig/conf.avail/45-latin.conf: Set substitutions for Latin fonts
- /usr/share/fontconfig/conf.avail/46-noto-sans.conf: No description
- /usr/share/fontconfig/conf.avail/46-noto-serif.conf: No description
- /usr/share/fontconfig/conf.avail/48-guessfamily.conf: Guess a generic-family for substitution
- /usr/share/fontconfig/conf.avail/48-spacing.conf: Add mono to the family when spacing is 100
- /usr/share/fontconfig/conf.avail/49-sansserif.conf: Add sans-serif to the family when no generic name
- /usr/share/fontconfig/conf.avail/50-user.conf: Load per-user customization files
- /usr/share/fontconfig/conf.avail/51-local.conf: Load local customization file
- /usr/share/fontconfig/conf.avail/57-dejavu-sans-mono.conf: No description
- /usr/share/fontconfig/conf.avail/57-dejavu-sans.conf: No description
- /usr/share/fontconfig/conf.avail/57-dejavu-serif.conf: No description
- /usr/share/fontconfig/conf.avail/58-dejavu-lgc-sans-mono.conf: No description
- /usr/share/fontconfig/conf.avail/58-dejavu-lgc-sans.conf: No description
- /usr/share/fontconfig/conf.avail/58-dejavu-lgc-serif.conf: No description
- /usr/share/fontconfig/conf.avail/60-generic.conf: Set preferable fonts for emoji/math fonts
- /usr/share/fontconfig/conf.avail/60-latin.conf: Set preferable fonts for Latin
- /usr/share/fontconfig/conf.avail/62-caladea.conf: No description
- /usr/share/fontconfig/conf.avail/62-carlito.conf: No description
- /usr/share/fontconfig/conf.avail/65-droid-kufi.conf: No description
- /usr/share/fontconfig/conf.avail/65-droid-sans-mono.conf: No description
- /usr/share/fontconfig/conf.avail/65-droid-sans.conf: No description
- /usr/share/fontconfig/conf.avail/65-droid-serif.conf: No description
- /usr/share/fontconfig/conf.avail/65-fonts-persian.conf: No description
- /usr/share/fontconfig/conf.avail/65-khmer.conf: No description
- /usr/share/fontconfig/conf.avail/65-nonlatin.conf: Set preferable fonts for non-Latin
- /usr/share/fontconfig/conf.avail/66-noto-sans.conf: No description
- /usr/share/fontconfig/conf.avail/66-noto-serif.conf: No description
- /usr/share/fontconfig/conf.avail/69-unifont.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-bookman.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-c059.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-d050000l.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-fallback-backwards.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-fallback-generics.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-fallback-specifics.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-gothic.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-nimbus-mono-ps.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-nimbus-roman.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-nimbus-sans.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-p052.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-standard-symbols-ps.conf: No description
- /usr/share/fontconfig/conf.avail/69-urw-z003.conf: No description
- /usr/share/fontconfig/conf.avail/70-no-bitmaps-and-emoji.conf: Reject bitmap fonts, including bitmap emoji fonts
- /usr/share/fontconfig/conf.avail/70-no-bitmaps-except-emoji.conf: Reject bitmap fonts except bitmap emoji fonts
- /usr/share/fontconfig/conf.avail/70-no-bitmaps.conf: Reject bitmap fonts except bitmap emoji fonts (deprecated; use 70-no-bitmaps-except-emoji.conf)
- /usr/share/fontconfig/conf.avail/70-yes-bitmaps.conf: Accept bitmap fonts
- /usr/share/fontconfig/conf.avail/80-delicious.conf: No description
- /usr/share/fontconfig/conf.avail/81-ubuntu.conf: No description
- /usr/share/fontconfig/conf.avail/90-synthetic.conf: No description

$ fc-match -s sans-serif
Arimo-Regular.ttf: "Arimo" "Regular"
NotoSans-Regular.ttf: "Noto Sans" "Regular"
DejaVuSans.ttf: "DejaVu Sans" "Book"
DejaVuSans-Bold.ttf: "DejaVu Sans" "Bold"
DejaVuSans-Oblique.ttf: "DejaVu Sans" "Oblique"
DejaVuSans-BoldOblique.ttf: "DejaVu Sans" "Bold Oblique"
verdana.ttf: "Verdana" "Regular"
arial.ttf: "Arial" "Regular"
NimbusSans-Regular.otf: "Nimbus Sans" "Regular"
tahoma.ttf: "Tahoma" "Regular"
Carlito-Regular.ttf: "Carlito" "Regular"
DroidSansEthiopic-Regular.ttf: "Droid Sans" "Regular"
DroidSansArabic.ttf: "Droid Sans" "Regular"
DroidSansDevanagari-Regular.ttf: "Droid Sans" "Regular"
DroidSansTamil-Regular.ttf: "Droid Sans" "Regular"
DroidSansJapanese.ttf: "Droid Sans" "Regular"
DroidSansFallback.ttf: "Droid Sans" "Regular"
DroidSansFallbackFull.ttf: "Droid Sans" "Regular"
FreeSans.otf: "FreeSans" "Regular"
ARIALUNI.TTF: "Arial Unicode MS" "Regular"
FreeMono.otf: "FreeMono" "Regular"
FreeSerif.otf: "FreeSerif" "Regular"
Font Awesome 5 Brands-Regular-400.otf: "Font Awesome 5 Brands" "Regular"
Font Awesome 5 Free-Regular-400.otf: "Font Awesome 5 Free" "Regular"
AdwaitaMono-Regular.ttf: "Adwaita Mono" "Regular"
FFMetaProRegular.TTF: "Meta Pro" "Regular"
LibertinusMath-Regular.otf: "Libertinus Math" "Regular"
LinLibertine_R.otf: "Linux Libertine O" "Regular"
LinLibertine_R_G.ttf: "Linux Libertine G" "Regular"
LinLibertine_DR.otf: "Linux Libertine Display O" "Regular"
LinLibertine_M.otf: "Linux Libertine Mono O" "Mono"
DINBdA__.ttf: "DIN-BoldAlternate" "Regular"
FiraSans-Regular.ttf: "Fira Sans" "Regular"
Roboto-Regular.ttf: "Roboto" "Regular"
SourceSansPro-Regular.otf: "Source Sans Pro" "Regular"
Hack-Regular.ttf: "Hack" "Regular"
Futura LT Book.ttf: "Futura LT Book" "Regular"
NotoSansMath-Regular.ttf: "Noto Sans Math" "Regular"
DejaVuSerif.ttf: "DejaVu Serif" "Book"
SourceCodePro-Regular.otf: "Source Code Pro" "Regular"
NotoSansNKoUnjoined-Regular.ttf: "Noto Sans NKo Unjoined" "Regular"
D050000L.otf: "D050000L" "Regular"
FRABK.TTF: "Franklin Gothic Book" "Regular"
FRADM.TTF: "Franklin Gothic Demi" "Regular"
LinBiolinum_R_G.ttf: "Linux Biolinum G" "Regular"
SabonLTStd-Roman.otf: "Sabon LT Std" "Roman"
NotoSerifOttomanSiyaq-Regular.ttf: "Noto Serif Ottoman Siyaq" "Regular"
NotoZnamennyMusicalNotation-Regular.ttf: "Noto Znamenny Musical Notation" "Regular"
Athiti-Regular.ttf: "Athiti" "Regular"
NotoSansLaoLooped-Regular.ttf: "Noto Sans Lao Looped" "Regular"
NotoSansTest-Regular.ttf: "Noto Sans Test" "Regular"
attac_serifenlos-caption.ttf: "Attac Serifenlos Caption" "Regular"
NotoSansNagMundari-Regular.ttf: "Noto Sans Nag Mundari" "Regular"
NotoSerifNPHmong-Regular.ttf: "Noto Serif NP Hmong" "Regular"
Beon-Regular_EG.otf: "Beon" "Regular"
Heuristica-Regular.otf: "Heuristica" "Regular"
NotoFangsongKSSRotated-Regular.ttf: "Noto Fangsong KSS Rotated" "Regular"
NotoSansKawi-Regular.ttf: "Noto Sans Kawi" "Regular"
NotoSansSunuwar-Regular.ttf: "Noto Sans Sunuwar" "Regular"
NotoSerifHentaigana-Regular.ttf: "Noto Serif Hentaigana" "Regular"
NotoSerifTodhri-Regular.ttf: "Noto Serif Todhri" "Regular"
Ubuntu-C.ttf: "Ubuntu Condensed" "Regular"
Ubuntu-R.ttf: "Ubuntu" "Regular"
CrimsonText-Regular.ttf: "Crimson Text" "Regular"
lucida-grande-2.ttf: "Lucida Grande" "Regular"
FrancophilSans.ttf: "FrancophilSans" "Regular"
lucida-grande-light.otf: "Lucida Grande" "Light"
LinLibertine_RZ_G.ttf: "Linux Libertine G" "Semibold"
LinLibertine_RB.otf: "Linux Libertine O" "Bold"
LinLibertine_RB_G.ttf: "Linux Libertine G" "Bold"
LinBiolinum_RB.otf: "Linux Biolinum O" "Bold"
LinBiolinum_K.otf: "Linux Biolinum Keyboard O" "Regular"
CrimsonText-Bold.ttf: "Crimson Text" "Bold"
Font Awesome 5 Free-Solid-900.otf: "Font Awesome 5 Free" "Solid"
LinLibertine_RI_G.ttf: "Linux Libertine G" "Italic"
Crimson-Italic.otf: "Crimson" "Italic"
LinLibertine_RZI_G.ttf: "Linux Libertine G" "Semibold Italic"
NotoColorEmoji.ttf: "Noto Color Emoji" "Regular"
AdwaitaSans-Regular.ttf: "Adwaita Sans" "Regular"
AdwaitaSans-Italic.ttf: "Adwaita Sans" "Italic"
wingding.ttf: "Wingdings" "Regular"