So far i have played the game i have human/humanoid bandits, undead skeletons/zombies and vampire/wights+ summons like i used my self too.

And i had a lizardmen ambush and a really tough mire ghost unique encounter so far.

what about a fat cave bear, ore a pack of wolves/wargs ore boars in woods (could be good source for leather hide ect).

Also some more not mundane, like elementals (you could even add them as summons in the occult tree if someone prefer fire ect, over dark magic).