How many unanimously agreed upon “greatests” are there in the NBA?

Before you answer “none, there’s always someone…” I understand in a literal sense “unanimous” is always a bit of hyperbole, however, I mean overwhelming consensus. Very few fans or commentators will tell you someone besides Steph is the greatest shooter of all time.

Are there any other contexts where few will ever argue about [player] being the greatest [skill] at basketball?