Yuuki in ATLALOK world would be awesome. Although lol poor lady would probably have less fun in Musketeers' Paris. Ah yes, please enjoy this casual racism and crap in the streets. But I'm sure the boys would be happy to see her, at least. ♥
Porthos would pick super strength so he could avoid any falling rocks because his mun is super paranoid about season 3 likely pick something really practical that would benefit the others, too? So something like that empathy where he'd be able to pick up anyone else's abilities and have a collection or shapeshifting or creating forcefields. Something that would aid in battle and not just aid himself. But super strength would actually SUIT him best and he'd ultimately be happiest with it, probably.
oops forgot a question haha: Going off your answer lol... what kind of bender would Yuuki be, if any at all, and why?