I haven't seen enough of the Sociedad lad to comment, but Pulisic does make sense in that he's a proper dribbler. I've mostly seen him on the left, but anyone who can tie Kimmich into knots like he did is an interesting potential option. Are we sure he can turn and create from deep enough?
Fekir and Dybala being proper 10s seems solid enough, though I'd rather see us go with someone more comfortable coming deeper, if there's a playmaker like that out there, since it would free up Pogba a bit more and I think we need creative help even getting the ball to our 10s since Jose's teams are never great at that sort of thing. Similarly, when we play 3 at the back or a 4-3-3 or diamond with Herrera, Pereira or Fellaini in midfield instead of a winger, would they excel as the 10 behind 2 up front or struggle to get into games like Mkhitaryan has?
I think we need players who excel at turning and dribbling in the middle third more than we need guys skilled in the final third. Which is to say, a prime Iniesta would help us more than a prime Ronaldinho. I'm not saying your suggestions aren't right, but stylistically they probably make more sense than Griezmann in that sense. Quality is still probably the main issue, though, and if Griezmann wants to come here I could see him changing his style up a bit. He's already gone from a winger to a support striker to more of a 10. Maybe he'll get even better as a playmaker as he hits his late 20s.