I believe Space Station 14 fits your criteria exactly if I’m interpreting it correctly. Space Station 13 would as well if not for the fact that player accounts must still be centralized to a server. That server is currently under a cyber attack, which really shows the importance of decentralization (in this instance, I’m not that big a fan of the concept).
Further edit: after reading your other comments, definitely try out either SS13 or 14. I don’t play much these days because server variety has fallen off a cliff but the idea is all sorts of communities pop up with their own server which could deviate heavily from wherever they forked from. This led to all sorts of different playing experiences. Try some out to see if they fit your preferences.
I don’t know if this is true but it was very fun to read.