Great work here Litotes
I've got a suggestion here.
Have you also got the numbers of slams played at hand so you could provide a list with "average points"? It would serve to give a better overview about the actual performances of a certain player at a specific event/on a specific surface.
This way one could make deliberate statements about a player like:
"Reached at least the SF stage" at ~800 points or
"Almost always reached the final" at ~1100 points etc.
Of course i'm aware that this list wouldn't reflect longevity performance and favour players who retired in their peaks. It would be a way though to compare if top players are more likely to regularly go deep in specific tourneys or on specific surfaces and which stage they reach/reached on average.
I'd also suggest to only take into account MD direct acceptances when counting the appearances (i'm not even sure since when they play qualifications for the GS). Also there shouldn't be dark horses with high points because of single victories since all of those players will have contested 5-6 GS at least in order to enter your lists in first place and that should be enough to flatten the average points.
I apologize in advance if there is already such a list somewhere.