Popovich is definitely one of the greatest coaches, ever. IMHO he is better than Phil Jackson, because he hasn’t had nearly the talent that Jackson has had.
I’m still going to give Jackson the edge on sheer percentage. 20 years, no missed playoffs, 13 trips to the finals, 11 wins, those are just scary numbers. And yeah he coached a lot of truly great players, who combine for 1 championship win with coaches not named Phil.