"Flare" is not one of your options. Your options for fair batted balls are "ground ball," "bunted ball," "line drive," or "fly ball." The first 3 cannot be IFF, but this batted ball was clearly none of the 3.
I use the word flare to show it was in between "line drive" and "fly ball".....in this case I believe it is closer to the former which is why I agree with Barrett.
Looked to me that F1 could have with ordinary effort got under that and make a catch, IFF in my opinion, 1B umpire thought so too but choked a bit.