Hayland Terrain now have the Studio Miniatures horror character range including
The Vampyr, though the range is on the small side of 28mm.
Mirliton have a very nice 80s Grenadier
Vampire set although the Dracula cape over Nosferatu coat is an odd choice, definitely smaller in 25mm scale but the swishing cloak version is quite tall.
I've been tempted to kitbash with a plastic
Mantic Ghoul head and a body from a 28mm historical or suitable fantasy range for a Nosferatu type from any era.