Cave Biomes

Chaotic caves
Spawns: House Creeper, Stickman, Glitchite, Spider Pig and Uneasy Dweller

Mitey Caves
Spawns: All ore bugs and silverfish and endermites also silveranahs

Webbed caves
Spawns: All Spiders

Rotted Caverns
Spawns: Rattasaurus, Silveranah, Vex, Bugsect, Silverfish, Pufferfish

Eerie Pit
Spawns: Metal Slimes, Plantites and Cumauli

Lucky caves
Spawns: Magic Glove, Animals, Wandering Traders, Bookshelf Golems

Driplush  caves
Spawns: Plantites and Bugsects

Volcanic  Pit
Spawns: Magma Cube, Coal Ore bug, Copper Ore Bug, Blaze, Uneasy Dweller