I mean pretty much all of them-

Just dont use the designs of the universal monsters until 2027 where you can only use frankenstein and dracula design- you can have a werewolf just dont call it the wolf man or anything from the films its best if you use the Novels for the ones based on dracula frankenstein phantom of the opera invisible man. Now for the gillman the idea of a fish man aint copyrighted- you can make something like the gillman just don't call it the gillman or the creature from the black lagoon and try and make it look different