Some cast members also overlap with the Hammer movies because Peter Cushing played Dr. Frankenstein and Professor Van Helsing, David Prowse played Frankenstein’s monster, and Christopher Lee played Count Dracula (why else is he named COUNT Dooku?)
Yeah that too. Dooku is almost entirely a Dracula reference. Palpatine is also Dracula like in some ways. Even RLM noticed how Dracula-like he is in the Knighting of Vader scene.