Skeleton workers
Although we usually see skeletons as enemies in games, I thought what about workers? If a mighty necromancer can raise an army of warriors then why can't they also do hunting, gathering, mining, carpentry etc. Saving their skills as living beings, these workers are skilled and capable and also immune to a lot of human problems!
The hunter, working to hunt both the animals and occasionaly people for the great necromancer who raised him.
Merchant - although it is preferable for merchants to be alive as not to scare potential customers, from time to time the undead are more fitting for the role, especially trading with more understanding people.
Wild beekeper - every necromancer and their entourage has to eat and small dwarven skeletons are great at climbing trees to get the sweetest honey.
Warrior - more of a classic fantasy trope, he serves more as a scare in darker parts of a necromancer manor.