When there last month and whilst clowning around trying to get a photo with my face in the centre frame, of the 35 photos, I could name only around a dozen. To the best of my memory they included - Johnny Moss, Puggy Pearson, Doyle Brunson, Nick The Greek, Stu Ungar, Phil Hellmuth, Johnny Chan, TJ Cloutier and the now late great Chip Reese.
Wikipedia, as expected, has the full list if anyone wants to cheat