I don't know. I'd classify them as "other". After a while, Jason just became a corpse animated by his spirit for the purpose of vengeance/slaughter. Frankenstein's monster is just something else.
You wanna go there? Fine. A "real" zombie? A "real" zombie is a living human that has had their will taken away by a Voodoo practitioner. Therefore, Resident Evil creatures are not zombies.
You are mistaking the "zombies" of the real world with the undead creatures of movies, t.v., and literature that are named after the creatures mentioned previously.
Agreed (maybe they're trying to go the Addams Family route? Most of them looked normalish; it was the behavior that set them apart) and agreed.
Still, some part of me delights at the idea of Eddie Izzard playing Grandpa.