Fonts - tremho/thunderbolt-common GitHub Wiki
The following fonts:
Sans
A classic sans-serif font, like Helvetica or Arial
Sans-Thin
A thin stroke version of Sans
Sans-Light
A very thin stroke version
Sans-Medium
A slightly thicker stroke than the default Sans
Sans-Bold
A bold stroke
Sans-Heavy
A vert bold, heavy rounded appearance
Sans-Condensed
A tightly spaced version of Sans
Sans-Condensed-Light
A tightly spaced and thin version of Sans
Sans-Condensed-Bold
The condensed effect is stretched back out again a bit by the bolding
Sans-Mono
A mono-spaced font, no serifs
Serif
A classic newsprint-style font, such as Times or Palatino
Serif-Bold
Bold version of the serif font.
The following fonts should be available on all modern Android devices (since Oreo), but may not render on the emulator They are available for iOS
Serif-Mono
A mono-spaced font with serifs.
Smallcaps
A font where lowercase letters look like small upper case characters
Marker
A casual font, looking slightly handwritten, like Comic Sans
Marker-Bold
A bolder version of the marker font.
Script
A cursive calligraphy-style font for decorative lettering.
Script-Bold
A bold version of script.