I found AnarchyOfMub and it is an anarchy server with no rules so players can basically do anything they want.
The world has a 10k by 10k border so it feels more packed and you can run into people more. The vibe is built for griefing bases PvP and even duping items if that is your thing.
If you want a server where nobody is going to protect your stuff and every choice can turn into a fight this one fits that style.
10b10t is an anarchy Minecraft server where there are no gameplay rules and no resets. It is the kind of place where you can PvP and grief and dupe and watch bases get wiped and nobody stops it.
It is built on newer tech and it tries to stay stable even when people are doing a lot. It runs with a high render distance of 32 chunks and uses async and multithreaded stuff to help with performance.
There is no store and no ranks so nothing is locked behind money. The owner is also slowly testing bigger systems like small events and dupe related mechanics and some custom vanilla style enchants. If something feels bad it gets removed and anarchy stays the main point.
It is cracked and the post says it is meant to be safe from Mojang stuff. If you want old school pure vanilla anarchy this might not be that. If you want anarchy with a newer feel it is worth a look.