The Forgotten Realms has most of these
Vampire Dragons: https://forgottenrealms.fandom.com/wiki/Vampiric_dragon
Demon Unicorns: https://forgottenrealms.fandom.com/wiki/Black_unicorn
Skeleton Wizards: https://forgottenrealms.fandom.com/wiki/Lich
Fey Werewolves: https://forgottenrealms.fandom.com/wiki/Brokenstone_Vale
The only think I don’t have on hand are angel ghosts and lochness mothmen in the Forgotten Realms, though I think you probably could find the former.
Not that different than a lot of the relationships I had when I was young to be honest.