Most elements of the vampire-mythos are post-Enlightenment and Romantic, especially the affinity with animals, concept of MetaMind (ie; ESP, telepathy, etc.), aristocratic trappings and the idea that the vampire has connections with the ancient world. These themes hinge upon the folkloric idea of the Undead in Eastern and Southern Europe which was, in turn, heavily influenced by the Romani idea of the 'mullo'. There has been enormous (truly staggering) amounts of academic research supporting this, especially since the turn of the millennium. Because it's a mostly modern form (apart from those Romani elements), we can trace the evolution of the vampire with exceptional accuracy.
In my view, its being modern doesn't diminish the power of the archetype. On the contrary, there are many illuminating questions around why the archetype came into being as it did, when it did, rather than in the ancient world. There are faint ancient precursors to elements of the vampire, especially blood-drinking, but there is no ancient being which corresponds to what we today would classify as a vampire. Interestingly, many of those which come closest are not Egyptian but are found in the pre-Aryan, Indus Valley cult of Kali, whose worshippers may be the ancestors of the Romani.
I think Egypt (especially the idea of Egypt) can be used to cause changes in modern consciousness but there's no connection with vampires. If there was, it would centre on Nephthys, the "Lady of the House" associated with death and the magic of the night, rather than her sister Isis. "Aset" is a title of Isis and, interestingly, some in Egypt and Africa have used it as a title for the Virgin Mary.
I remember when Aset Ka was founded, c. 2006. At the time, Luis Marques used to lurk in ONA Yahoo! Groups, attempting to convince Traditional Satanists to abandon their practices and follow him. A tough crowd to try that on. I'm fairly sure I banned him from one of them for spamming. I'm rather surprised that he's still around. His books (what I've read of them before my masochism was sated) follow the usual occult marketing ploy of talking about things in a way that a very young person might find mysterious/impressive but which utterly fall apart when they're analysed with even basic critical scrutiny. It's all hot air. Still, if you've found it all helps you to consolidate parts of yourself, maybe it has served a purpose for you. There are much higher horizons though.
Yes, the Immortal Nobility, Born in Blood and Darkness, are well-known for respecting law-enforcement agencies.