I don't know if they're part of a profession, they're all on one of the big residential lots where the owner still lives, and I haven't seen them wandering around town. I only know they're there now because my founder was working a PI case and one of them was the end of the chain. The men all have a yellow sweater with white shirt, brown pants, and the light brown business shoes from the base game. The women have light brown blazers with yellow shirts underneath, a brown, knee-length skirt, and brown heels.
Edit: I don't think they're proprietors because I don't have that expansion pack, I'm running Seasons, SN, UL, Pets, Gen, WA, and Ambitions
Edit 2: I tried resetsim * and it got rid of the spawned people (I think).
I have another question for any DV players: have the dragons ever stopped working for people? My sims aren't getting the dragon moodlets nor their needs refilled. Even new dragons are having this problem.