If I remember the back of the book in 6th ed let you use Black knights in brettonian wedge formation (very naughty) and they had bowmen. However now in 8th ed your best looking at Blood knights naturally for that feel, although they are very hard to replace on the field once they go down. This brings us back to Black knights. I suppose it really depends on how you wish to fight this one out or what is the look of the army I want?
Models to go for are Black Knights, Blood Knights, Grave Guard and Skeletons. Ghouls in a Blood Dragon army sound off to me (although they are our best core). Dire wolves, Fell Bats, Bat swarms,Vargheist any that is fast should be included. With your vampires I suppose Red fury and Quick Blood shouldn't be missed out and neither should dread Knight on at least one of them. Although zombies make great cheap bumps as we know for what you are looking for I'm unsure that they would be right in such an army.
However its your list so think of what exactly your theme is and go on from there. Best of luck.