Thank you for your helpful comment. I'll add the doll variants and remove the unused enemies.
'brown rat and green spider' this most likely refers to the Vault Rat and Fungal Spinner. These enemies are indeed not present in the current update. The Fungal Spinner was removed along with other enemies from the Mushroom Caves, and the Vault Rat was supposed to be located in the Dwarven Treasury. They still remain in the game's source files, which is why animations and WooHoo compatibility were also made for them.