IRT 'best players of all time', winning the Finals MVP isn't necessarily the best measure of that, of course, but basketball does seem to be a game where the best players dominate in the big moments. They've only been awarding Finals MVP since 1969 so obviously this list of winners is omitting Bill Russell and other greats.
Non-bigs
Michael Jordan 6
Magic Johnson 3
Larry Bird 2
Kobe Bryant 2
Bigs
Tim Duncan 3
Shaquille O'Neal 3
Kareem Abdul-Jabaar 2
Hakeem Olajuwon 2