Yeah our army as far as fluff goes generally picks a bloodline and rolls with it. The von carnstiens being the easiest since all our special vamps are from that bloodline and in a 2500 point game you can run all of them.
Otherwise then that the only easy ones are a ghoul king list, a kemmler/krell list, or a ghost list.
After that you'd have to look up the other bloodlines and determine for yourself what you think fits.