I'm playing a game with the latest edition atm, and some things seem quite strange. I got wights, smoulderghosts, umbrals, sepulchrals, flame and iron corpses, and cavern wights as additional recruits.
Current mods are; CBM, CPCS, magic site mod and Holy war mod.
Edit: Just noticed that they are all for free, 0 gold cost to recruit.
Tried playing with only the Arga dis mod, and the extras was still there.