Basically, the mod ventures and variants also adds a jungle skeleton variant to the biome,and I like both mods but overlap might be unnecessary for people.

I don't want to disable overgrown skeletons either as I love their spawns in the lush caves. I would just like an option or feature to disable their spawning in jungle biomes when variants and ventures is installed, to get the most out of both mods without overlap

https://legacy.curseforge.com/minecraft/mc-mods/variants-and-ventures

Just change their spawn biomes in the datapack