I found 1fighter2defenders and it is a survival server that tries to stay as vanilla as possible.
There are no gameplay rules at all. No land claims and no protection. Griefing building cheating and pretty much anything goes.
They also say there are no server sided dupes and no world resets so whatever happens stays in the world.
The server started in April 2021 and it has been around for over 4.5 years with thousands of players visiting at least once.
It runs on 1.21 and you can join from 1.17 up to 1.21.11.
