I have to say I really like the list. You can tell by the co-number 1 years that you have spent a lot of time and thought in it.
Comparing your list to Wikipedia's:
In 1964 it has them as co-number 1's. I'd like to see a list of both of their tournament wins so I could make up my mind. On the face of it though Laver seems to nod. (Dominant head to head plus 2 out of 3 of the majors). I wonder why the ranking voters at the time had Rosewall out on front or at least equal to Laver?