FWIW, this website is out of date; there's been enormous improvements in zkp constructions and applications in the intervening 2 years.
(This is not a slight against the maintainers; the space is moving incredibly quickly, so it's difficult to keep updating regularly.)
Do you have a more up-to-date link/source?
https://github.com/matter-labs/awesome-zero-knowledge-proofs is more up to date.