Just put them in order of date if you mean refined by the progression of years in relation to boxing. If you mean the fighters with most unwanted elements in their boxing, ther'es no point in including anyone beyond Louis and Robinson probably, they might have barely enough footage for that kind of analysis. If you mean take a guess, just list them in order of how much you like them! I'd go: Robinson Louis
Louis/ Robinson tied for first depending on what you value I'd rank Louis higher because I feel he was a bit less wild and more technical but Robinson was more mobile so I can see the argument for him. Benny Leonard 2nd good all around but felt he never reached the heights that Louis or Robinson did Tunney 3rd pretty solid overall but not as well rounded as the other 3 And Gans 4th good for his time but not as good as those who came after him
Robinson Louis Leonard Gans Tunney This is a lot of guesswork because we don't' have much footage to work except for Robinson and Louis.