These records coincide with racquet technologies.
You don’t use “aluminium” bats....graphite, boron, carbon fiber, steel-Conners, etc , at the major league level.
Unfortunately, these crossed into professional tennis.
Without them, no 130-140 mph service, nor returns over 100, negating the full court complete game.
Thus, ranking for real tennis would be:
1. Federer
2. The Rocket, Rod Laver
3. Jack Kramer
4. Pancho Gonzales
5. Bill Tilden.
How can you have at #1 Federer, a modern player with all the technological advantages you cite, and leave out Djokovic and Nadal?
Today’s tennis players, like their compatriots in other major sports, are superior physically—-bigger, stronger, faster, and better conditioned. Tennis has become a true international sport, which has made it more competitive.
Big Bill Tilden was 6’2”. He played in long pants.
Can you explain a little more how you came up with that list?