I'd call that a common misconception
He was decent as a right sided 10 with Hakimi as a left wing back and three at the back but even then he drifted to the left a lot. In his best seasons, he played primarily through the left. Absolute beast there and from what I've seen so far I wouldn't have Khvaratskhelia ahead of that Sancho. It's not that he can't do a job there but I think it is a waste of talent of you play such a player in anything but his best position.
PS: Because people usually link to transfermarkt.de to counter this argument: They have very weird positional statistics for a lot of players. Better look at the heat maps on sofascore for those seasons. They paint a relatively clear picture of Sancho preferring the left channel in his standout seasons.