He is the one I would bet on right now, then my second option is not going to be there either, Xander Schaufffele.
Golf is one of those sports that has a lot of variance, so the best option is an elite player who is at his peak, and/or who is just at his "fire" moment.
Therefore, from the list above (OP) the "@" are a guide, but the Majors are won by those who have that positive variance line, e.g. Ram the winner from last year.
Then, money, money, money, it would be Tommy Fleetwood, this guy must win at some point, in fact he still has zero wins, he is one of those talented guys in Golf, many top 5... if he wins a Major, it wouldn't be a surprise, even if their "@" don't place him as a big favorite.
Golf, it is one of these sports where it is worth taking odds greater than >> 3x.