If we ignore the innovative spirit that set him apart 20 years ago, but not anymore today, I think Rangnick is overrated as a coach. I mean what has he really done as a coach since he left Schalke almost 15 years ago:
Finished 2nd with Hoffenheim's insane budget in the 3rd and 2nd division, had one great half season in Bundesliga when Hoffenheim were the new kids on the block before they dropped like a stone and settled into midtable, another 13 games for Schalke before quitting with burnout, another 2nd place with Leipzig after spending about as much as the entire rest of the competition combined and a 66 point third place, about what you'd expect from Leipzig's squad, especially if you sod off the EL and go out in group stages.
It's one thing if you tell him to run your club and let him coach for a season to set up a foundation, but I don't really see why he would be named in the same sentence as Nagelsmann and Tuchel, who shaped truly special sides with their coaching.