I want a fantasy (so no typical cn wish-fulfilment novels about the apocalypse) novel where the undead are a huge problem. They don't just make fodder, but they actually the biggest and everpresent threat. I would also love if the undead had a lot of diversity, like normal zombies, ghouls, banshees, many types of liches, undead knights of all kinds, vampires etc. You get the picture. I would also love for the worldbuilding to be good. I have already read/am familiar with: Overlord (Undead are a problem, yeah, but not exactly that big of a deal), The experimental log of a crazy lich (Same problem as Overlord, though a bit better), The holy Emperor's son is a necromancer (THIS KINDA SHIT) ALSO, FORGOT TO MENTION NO HAREM