This makes me sad, but looking into a little more, At the very least I can scrounge something together that wouldn't be too far of a stretch. As it stands, I've got 40-some skeleton warriors, archers, 20 tomb guard( although some of those are a problem cause they're mummies) cavalry, mounted archers, monsters like the giant and necrosphinx, and a variety of the usual lords & heroes.
Sounds like most of the flavourful stuff and anything with a bow is out. But at the very least, I can do a bit of what you said, Skeleton warriors will be fine, the horsemen doesn't look like too much of a stretch for black knights, Tomb guard for grave guard. I might even have to try doing a tiny bit of playing around with one of my mounted tomb heralds and see about making that a wight king (gives me an excuse to fix the horribly unbalanced model anyways)