The original undead lists.... back in 2nd through to 4th or whenever TK appeared had Undead in Sylvania with chariots and bows and even cross bow options. When the armies changed and TK developed, they went with two different themes.
The TK overall are more rounded an army with considerable strength.... you have some great elite units and some interesting choices like "golden age" etc. I think we will see when VC are redone a return to masses of hordes of zombies and undead creeping forward with ghouls etc led by the necromancer/vampire ideal. The VC have always had the zombie option but with 8th and even 7th there was no point to them as the rules were silly for the ghouls... vs zombies as core choices. But.... let us see what the future holds. At the moment most VC players are stuck in the ghoul advance busing vampires or others forward.
I use zombies just because I like zombies.