I found a server called MinecraftOffline and it is all about lifesteal and anarchy. You can fight people and losing feels brutal since the gameplay is built around hearts getting taken.
It runs on version 1.21.11 and it has a zero reset policy so the world is meant to last. The server is hosted in Finland so it is aimed at good connections for Europe.
It also says it uses custom plugins and it lists strong hardware so it is trying to stay stable even when things get chaotic.
