The types/glyphs are 1:1 from Fredrick Brennan’s TT2020 v0.2: https://github.com/ctrlcctrlv/TT2020/ - Jackwrite (400): TT2020 Style E - Jackwrite Bold (700): TT2020 Style B - Jackwrite Thin (100): TT2020 Style D Kerning (defining spaces between pairs of characters) has intentionally been done only in discrete steps of 50/1000 em, to give the result an additional "hyperrealistic" touch. The fonts are the *.ttf and *.woff2 files, the rest is samples and license/copyright info.