In what way? Tactically I'd say they're very similar, especially in terms of their pressing. Much more so than Ten Haag, who prefers a more possession-based approach
But then Tuchel is a student of Rangnick's and Chelsea's football involves a
lot of possession identity and at the same time pressing. I don't think it's either one thing or the other to the extreme degree.
Pochettino, according to Spurs fans, haven't played that high press/high line since the first couple of seasons, and even since he hasn't played with it with PSG. By contrast, Ten Hag has only
ever employed the high press/high line. So who is more Rangnick in
practicality? Ten Hag. It might not be pure Rangnick, but it's presently more Rangnick than Poch's latter Spurs/present PSG.