My Personal Tier List. Units appearing in two lists are considered to be somewhere in between the rankings.
S
Wight King (both), Grave Guards, Belladama
A
Vampire Lord, Torguillus, Necromancer, Skeletons, Blood Knights, Black Knights, Radukar the Beast,Vhordrai
B
Radukar the Beast Vhordrai, Vamp on Zombie Dragon, Bloodborn, Lauka Vai, Dire Wolves, Crimson Court, Both Mortarchs
C
Both Mortarchs, Zombies, the rest of the Underworld Warbands, Fell Bats, rest of the Cursed City heroes, Vargskyr, Kosargi, Radukar the Wolf, Dragon & Terrorgheist, Avengori Lord
D
Vargskyr, Nagash, Mortis Engine, Corpse Cart, Vargheists
E
The rest of the Chariots