Phoenix1983
G.O.A.T.
Looking at your list, it's occurring to me that you could have a really odd circumstance where a player (e.g., Djokovic) achieves statistical supremacy over another (e.g., Nadal) in most significant categories, yet remains several all-time ranking spots below him. In my mind, they are very nearly equals at this point. I think this list may be based strictly on major title haul?
Major title haul is my main criteria, yes. It's key for me that a player dominate on the sport's biggest stages.
Also, I don't think that "several all-time ranking spots" actually means that much when we're discussing the Tier 1 players (other than Federer and Laver, who have distanced themselves from everyone else). I don't think there's that much difference between Sampras at #3 and Borg at #7, for instance. Any combination of the orders of these players could be argued.