Space Grotesk — the only zz8 typeface.
Weights used: 300 (Light), 400 (Regular), 500 (Medium), 700 (Bold).
Headlines: 700, all lowercase, letter-spacing -0.045em. Body: 400, 16/1.55.

Files:
  otf/       desktop installs (Light/Regular/Medium/Bold)
  variable/  variable font (TTF + WOFF2), full weight axis

Web embed (as used on zz8.ai):
  https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;700&display=swap

License: SIL Open Font License 1.1 (see OFL.txt). Free to install, embed, and redistribute.
(c) 2020 The Space Grotesk Project Authors, github.com/floriankarsten/space-grotesk