Going back to Universal Horror Land, here is a full list of every monster/scary/theme park friendly property they can pull from if they want:
Classic Monsters: Hunchback of Notre Dame, Phantom Of the Opera, Dracula, Frankenstein, Wolfman, Invisible Man, The Mummy, Creature of Black Lagoon
Universal Horror Franchises outside the monsters: Edgar Allan Poe, The Cat and The Canary, Ape Woman, The Creeper, Night Gallery, Alfred Hitchcock, The Creeper, Inner Sanctum Mysteries, Tremors
Family Friendly Horror Rights: The Munsters, The Addams Family (newspaper comic version; MGM owns the other versions), Casper the Friendly Ghost, Paranorman*, Coraline*, House with a Clock in Its Walls