Bam Margera SSBSTS, it's a respectful classic trick but he's overdone them. Has he ever done a regular back tail?
Jereme Rogers - Switch 360 flip because he can't do them regular 360 flips. And come to think of it, any trick where the skater does them switch or fakie but can't do them regular, like switch big spin heels.
Luan Oliveria - Hardflips, I don't the way he does them with the whole front leg tuck in.
Nakel - Nollie hardflips
Sage - Front tails
There are exceptions for some skaters who repeats tricks, like Daewon, Creager, Reynolds, Penny, Herman. We know they have their signature tricks but they do them so well that I don't mind.