LMFAOOOOOOOO!!! Let me guess you never boxed a day in your life and got all your boxing info from the guy at the barbershop that gives you the rest of your conspiray theories. If you want to talk about over rated Ali is the peak of the list. By far the most over rated athlete in any sport.
Tyson was the most gifted heavyweight of all time, but should have been a cruiserweight because of height, but was FAR from even close to the top 10. Lennox Lewis? LMFAO.
Boxing is not a sport that casual viewers can give accurate opinions. I boxed for close to two decades and have spoken to some of the best coaches in NY, NJ, and Philly. Your list sounds like something compiled by someone who only watches the "big fights" aka Mayweather fights.