I see two main contenders Van der Poel and Pogacar. After San Remo, I believe that Mathieu is stronger as he was able to follow Pogacar on both climbs. In order to win Pogacar should drop MVP, and even if the climbs are harder than in San Remo, they are shorter and better suited to Van der Poel.
Pedersen and Ganna are strong too, but I see them below the other two. I give them chances if the race is played differently, a crazy race with no control.
Finally, Van Aert et al. should be there too, but I see him incapable of fighting Van der Poel, he is very strong in stage races but has problems in one day's. And Jorgenson is strong, but I don't see him with the two favorites and hardly with Ganna and Pedersen.
Let's see