#3 Matt Hardy
One thing we all know to be true is that Matt Hardy is one of the most creative professional wrestlers of this or any other generation. Time and time again he has been able to reinvent himself across a variety of different promotions, and while it hasn't always worked out, he has certainly been able to land on his feet with the broken gimmick.
All Elite Wrestling would've been well aware of the impact that having someone like Matt could bring, and despite the fact he's almost certainly moving into the final few years of his in-ring career, there's still a lot left in the tank.
Most of the success with Matt's current run comes outside of the ring, too, or simply in his promos. He's so 'out there' that he could say literally anything and it would probably make sense within the context of the broken universe.
The next step will be to get him out there promoting AEW on various talk shows - and at that stage, Matt will take care of the rest.