#4 Hulk Hogan
Hulk Hogan's last match was in TNA/Impact Wrestling and he's felt that he never properly said goodbye to the WWE Universe. He was part of the recent Crown Jewel event where Team Hogan took on Team Flair.
It should also be noted that the legend is going into the WWE Hall of Fame in 2020 with the nWo. He has also been dropping hints at social media that a return to the Hollywood Hogan character could also be happening.
Eric Bischoff recently said that Hogan is recovering from back surgery, but he is also looking better than he has in the last 15 years. In another interview, with the Los Angeles Times, Hogan did say he wanted one last match at WrestleMania and would like it to be against the company boss himself -- Vince McMahon. He said,
"I talked to Vince, and I said I really don’t know if I could live with myself knowing my last match was with TNA [Total Nonstop Action Wrestling]. If I can get fixed, I pray I can have one more match. I told Vince, ‘When I get through this back surgery, I’m going to get in the best shape of my life and we’re going to talk about me having one last retirement match."
It'll be interesting if everything goes according to plan. Their last match was at WrestleMania 19, but perhaps, Hogan will get his wish.