Large Harems

I'm looking for book(s) recommendations with large harems.

I'm not fussy about genre or tropes. Down with omega verse, any kinda monster vibes and pitch black romance. Some MM would be ideal but not essential. FF would also be apprciated!

I'm coming off tbe back of an Ames Mills obssession, so anything with similar vibes. Ironside Academy is also one of my favourites so a harem of 11 is the most I've read but not appose to more.