Lennox Lewis was the last great heavy weight the reason we have Fury and Usyk is there are no great fighters in that division.
Lewis just about makes the top ten all time, Ali, Joe Louis and Joe Frazier would be among it but it's down to personal opinions after that.
For me it's Ali, because no other fighter had to beat as many greats to become champion.
Talk of fury as GOAT is embarrassing.