So… there’s two different answers to this question. If you mean all around as in offense + defense wise or if you mean all around as in triple double threat. There are only two players that can be considered amongst the greatest all around in BOTH interpretations, that is Michael Jordan and Wilt Chamberlain. Both players were beasts on the offensive AND defensive ends, and both players were no slouch at the triple doubles too. Not coincidentally, they are also #1 and #2 on my all time list.
Just for fun though here’s my two top 10 lists for this question
Greatest all around (two way player)
Greatest all around (triple double threat)