I doubt Simone skips AA in TF, and Suni only doing bars in TF isn’t happening, either, unless prelims beam gets feral. Suni’s beam isn’t high-impact anyway, it can bring in a huge score, and it’s a good aesthetic statement considering whoever is in the second spot is going to be bookended by at least one of Listunova and Urazova, or Tang. And while Gelya’s wolf turn is A Thing, her switch leap and cross positions are textbook. If Chiles is going, she better go first, be as solid as possible, and then scuttle that ass off the podium before the judges second-guess their scores.
I’d say this for USA prelims, and just take away the parentheses for TF. I suppose Lee could do FX in TF and gain some tenths over Chiles, but her face after some of those vault and floor landings in PT make me nervous and you might as well saddle Chiles and McCallum with as many TF responsibilities as possible at this point, within reason (aka no bars for McCallum and no beam for Chiles).
VT: (Lee), McCallum, Chiles, Biles
UB: (McCallum), Chiles, Biles, Lee
BB: (Chiles), McCallum, Lee, Biles
FX: (Lee), Chiles, McCallum, Biles