I found a modded Minecraft server called The Volkrune Realm.
It is mostly based around Valkyrien Skies2 with clockwork warium and superb warfare. The whole vibe is more like building moving stuff and messing with machines and combat mods.
Volkrune Realm Modded Airship Warfare
GG.MINEWIND.NET New Server IPFresh No Rules Anarchy 24 7 Chaos
I found a server called 99b99t and it is a brand new anarchy world. It is the kind of place where anything goes and nobody is going to stop you.
There are no rules and no limits so you can fight grief and survive however you want. The difficulty is set to hard so it feels rough and serious.
It stays online 24 7 and it supports Java versions from 1.12.2 to 1.21.11. The world is fresh so players are still making the first big marks.
GG.MINEWIND.NET New Server IP