I was interested in the others, but https://www.internetarchive.eu is a horrible corporate-looking site with a hero image, a boast about AI, a carousel of news that won't scroll with doing its slow scroll animation, a huge "meet the team" section with mugshots and boring profiles, social media links, a newsletter signup form, and nothing to say where the actual archive is.
Reading what little information they have there, they aren't a public facing or public serving organization. They seem to provide their services to institutions only:
"working with dozens of European libraries and government agencies to build web collections, Internet Archive Europe prioritized collaboration with cultural heritage organizations to safeguard our collective history."
Looks like an "organization" tailor made to be awarded EU funds for their "mission".