Goldust was shades of both "Exotic" Adrian Street and "Adorable" Adrian Adonis. And Adrian Street himself had similarities to Gorgeous George (though not technically a "ripoff", more of an inspiration.) Ryback had obvious strong similarities to Goldberg when he first debuted but ended up developing more of his own distinct character when he became the bully known as "The Big Guy." Damien Sandow is a lot like The Genius, an intellectually snobby character (similar thing with Christopher Nowinski.) Ric Flair took a lot from the original "Nature Boy" Buddy Rogers - the nickname, the robe, the figure four leg lock as a finisher, etc. The Godwinns carried on the tradition of the hillbilly gimmick that Hillybilly Jim (who managed them) and Uncle Elmer were doing a decade earlier. Hulk Hogan took certain mannerisms from "Superstar" Billy Graham (as did Jesse Ventura.) Jeff Jarrett took the gimmick of using the guitar as a weapon to smash over people's heads from Honky Tonk Man. JBL and ADR to an extent were both rich, pompous guys that were obviously inspired by "The Million Dollar Man" Ted Dibiase. The worst example of all is The Renegade from WCW trying to imitate the Ultimate Warrior (and failing so badly he ended up killing himself over it lol.) Etc., etc.