I run https://novo-atlantis.null.media which is meant to have a vibe kinda like that. We're super tiny, the only active posters are myself and an anarchist belarussian refugee. My white friend owns the actual server hardware, but they aren't involved in admin aside from the hosting. I threw a bunch of shit up so we'd have a TOS and to avoid the massive racism problems on the fediverse, we only do allow list federation. There's a lot of spanglish in there and I had hoped to build some kind of border vibes thing, but I've been struggling just to live.

Happy to change things up too if you want to collab. Won't hurt my feelings if you don't