#4 Matt Hardy (Does Own)

If there was something of a renaissance man in professional wrestling, it is Matt Hardy. The man who was known for his work in one of the greatest WWE Tag Teams, The Hardy Boyz, is genuinely having his life in AEW. His willingness to explore new boundaries and evolve his wrestling persona has had an impact on the business.
Matt Hardy is one of the lucky few wrestlers who have used his real name in WWE, though it is actually Matthew Moore Hardy. He's an 11-time WWE Tag Team Champion, 1-time WWE United States Champion, 1-time WWE European Champion, 1-time WWE Cruiserweight Champion, 1-time WWE Hardcore Champion as well as ECW Champion.
In fact, his most significant contribution to the pro wrestling industry was the advent of the Cinematic match with the creation of the Final Deletion match during his time in TNA/Impact Wrestling. It was something that WWE used to significant effect in The BoneYard Match at WrestleMania.
While Matt Hardy and Jeff Hardy did return to WWE back in 2017 at WrestleMania 33, the expectations were quite high. In particular because Matt Hardy had enshrined in the minds of pro wrestling fans, the persona of Broken Matt Hardy. With that said, WWE never actually took advantage of it, except for a Final Deletion match with Bray Wyatt.
In AEW, Matt Hardy is trying to do something different with the "Multifarious" Matt Hardy. He said:
I've been thrilled with my experience in AEW. I honestly can't say enough good things about it. I wanted to pick up where we should've left off with "Broken" Matt Hardy and I did a little story segueing into that, which is Free The Delete, which is on my YouTube channel. That talked about how there is a new version of Matt Hardy coming to AEW. Once I started, from the jump, my plan was to do different versions of my personas throughout time, as the "Multifarious" Matt Hardy. Ultimately my goal is to lead that into something new, something to put that together into one entity, and have that be the next persona I really want to get over and run with.
It remains to be seen where his AEW career will go. There is also a possibility of a Hardy Boyz in AEW down the line with a dream feud with The Young Bucks. In today's pro wrestling landscape, anything is possible.