The only QBs on that list who I think would be an upgrade over Dak, vs a step back or lateral move, would be Bridgewater or Derek Carr.
Bridgewater's the next Alex Smith in my mind: if his knee is good, he'll be a high percentage game manager for a team that wins more games than you think. The NFL is built on short passing and he can pull that off. Carr is a really talented dude that I think is being screwed over by the general toxicity that is the Raiders; just look at Cooper when he came over here. He's not having a good year but you have to factor in the expansion-team level of players around him. Dude is accurate, has a lightning fast release, and can make all the throws: talent wise, he's a notch above everyone else on that list.
Everyone else... ehhh, I'd rather just have Dak. Foles and Flacco are mediocre QBs who each just had a good Super Bowl run. Tannehill at his best has looked about like Dak, Winston's a talented dude but just doesn't care, and everyone else on there is a JAG.