I am amazed that the Necro range is not only pretty much complete, but has further variety on top of a basic list!
Just as with the Steppe Goblinz range Bel has gone above and beyond the call of duty.
There are two monsters to choose from, and then a 3rd monster you could use as variety in the command unit if you didn't want a dragon proxy.
There are Anubian monsters too for heavy infantry, and two different kinds of skeleton close combat infantry.