Minecraft v1.16.5
Forge v36.1.16
Greek Fantasy v16.4.17

The blacklist to prevent structures from spawning in certain biomes may not be working correctly.
This is the current setup:

[features.satyr_camp]
	#Range: 0 ~ 1000
	chance = 15
	whitelist = false
	biome_types = ["NETHER", "END", "WATER", "COLD", "SNOWY", "MUSHROOM", "SANDY"]

But I am still finding structures spawning in mushroom and desert/beach biomes.

Also, Cerestas has z-fighting on it's teeth and Satyrs will stand on campfires and take damage constantly.

I'll add to this that the Mob Spawns Dimension Whitelist doesn't seem to be working either

[mob_spawns] whitelist_dimensions = true dimensions = ["minecraft:overworld", "minecraft:the_nether"]

Ara spawning in the dimension Atum:Atum

I tried to reduce the chances for these two (Ara & Satyr) both for camp and creatures and it doesn't seem to work either. I also tried to change centaur chances to 800 then to 1 then to 1000 and I never saw any centaurs (but I saw them before I messed with the chances). I also tried to change the dryad (these seem to be working) and the nayad (chances seemed to work but when I tried to add River to the biomes I never saw any in rivers). Each and every time I made a modification I created a new world to test my changes.