For whatever reason, I can't find any mods for 1.21.4 that accomplish simply preventing creepers from blowing up blocks, while still damaging players.
This is an extremely useful mod, at least to me, and if anyone could make it, I'd be extremely grateful.
If it's not much more difficult, it would also be cool to have the ability to disable enderman and ghast griefing, but the main one is creepers.