#3 Taz (AEW commentator/manager)
Taz in AEW is something unique. He's part of the AEW commentary team and serves as a Team Taz manager (Ricky Starks, Powerhouse Hobbs, and Hook). Primarily, Taz works on AEW Rampage. He's done a great job working as a heel manager, but that isn't what defines Taz.
Taz worked in WWE in his early years and made a one-off appearance in a Dark Match in WCW. But it wasn't until ECW that Taz truly defined himself. In late 1995, Taz unleashed his "Human Suplex Machine" character. His aggressive in-ring style coupled with mat wrestling skills defined what ECW was all about.
Taz eventually signed with WWE in 2000, debuting at the Royale Rumble and going over Kurt Angle winning by submission. But, as a wrestler, Taz would never be booked the same way as he did in ECW, relegated to feuds with Jerry Lawler and then becoming a mere background character in The Alliance.
The silver lining to this is that Taz made the transition to commentary, where he would work with WWE till 2009. He then went to work for TNA/Impact Wrestling as an on-screen character and color commentator till 2015.
While Taz was essentially not involved with wrestling, AEW signed him to a deal in 2019. There's no better indication of how Taz feels about working for AEW than when he said that it was the best place he's ever worked at.
From the looks, Taz is not going anywhere.