First of all, infantry: no more black skeleton officers, the Necrolytes had been promoted to squad leaders, and got officer stats. They retain their necrotic abilities of raising the dead.
I copied shamelessly Warhead's skeletal archers, mainly because they were the most cool-looking.
Remember the animated armors in Warhead's throne room? Well they got a bit more bulked up and renamed as revenants; floating armor animated by fusing a spirit to it, they're maximally obedient and deadly.
A kind of a command unit: Vampire Knight with ghost retinue. basically a generic hero substitute, with necromancerish powers and a special artifact, the bloody grail. Ghosts are hard to hit as they linger between physical and spectral realms, thus making perfect living shields.
Lastly, I've reworked the Bone Beast. He's not so bulky now, and has a secondary attack, as he's capable of engulfing his enemies with soul-burning frostfire.
That's all, will wikify these with the mateys sometimes.