We found 3 fonts on https://scram.com/manifesto.html

CachedRecheck
p
div
a
li
ul
10 Styles

Aeonik

Designed by Joe Leadbeater and Mark Bloom, CoType Foundry
span
a
button
4 Styles

Aeonik Mono

h1
h2
h3
3 Styles

Youth

Designed by Jan Novák, AllCaps

FontofWeb by Simdi Jinkins & Onyemsobi