Best mods for endgame difficulty? (Forge 1.20.1)

Hi! Me and my friends are running a small, ~15 person server of which I am the "admin". With the combination of mods like Apotheosis, Cataclysm, and Useless Sword, everyone's a bit obscenely broken, being able to deal ~40 damage conveniently and spam click to shred wardens with little difficulty. So we're looking for some unique spins on difficulty to keep the game fun, engaging, and not as peaceful.

The MAIN preference is that mob griefing is kept to a minimum (that responsibility's in the sole hands of Creepers and Ice/Fire Dragons).

The main way we've been handling progression and difficulty is through the auto-leveling mod, mutants mods, and just a whole lotta bosses, but even then it's not too tough anymore using our busted loadouts. There's always the option of scaling up AutoLeveling (which will be done), but it's just not enough to satiate the need for new and difficult encounters.

Thanks in advance!