I think seeing what makes Marth and the sword characters do so well against bayo, and seeing how Leo won against Salem should give us an idea on how we should play against bayos, instead of just thinking it's just exclusive to those characters entirely.
"But it
is only due to the specific attributes of the sword characters that allow them to go head to head with bayo (disjoints to catch landings and beat her Button to button)!"
"ZSS doesn't have the accessible grab game to punish her, nor the range to beat her button!"
"Mario and X character are too slow to punish her landings!"
Yes yes yes, you obviously can't do exactly what sword characters do, but you can orientate your play style to mimic certain things about them to make the MU easier. For example, Zard is fat and is a combo
Big Mac for bayo. But, he does have surprisingly running speed with an intangible UTilt and Usmash (insert obvious anti-air). He also has a good grab game to punish her with. Flamethrower is disjointed, so can be used for ledge trapping. Beating Dtilt will be vastly more tricky however.
Mario is too slow to consistently catch her landings, but Usmash tho, grab game tho, and well-spaced and timed Bairs tho to beat her buttons. Instead of being Mario and rushing her down for the grabs, play more like Marth and space her out with Bairs and fireballs here and there. Play a little more passive.
ZSS can beat out bayo's aerials with Zair and anti air her with Utilts if I'm not mistaken (won't talk much about her, don't know ZSS like that
)
I may be repeating what's been said, and you all thought of this to improve your games and whatnot, but for those that don't think of relativity and play style elasticity, try this out. Play more like Marth with your bowser or whoever.
Somebody let me know if I'm not saying anything new.