Bowsette - How about all of the above?

And monster girl lovers. Never forget the monster girl lovers.

Just think of all the fetishes Bowsette falls under, including what you get from everyone's different variation of the character and the story behind it all. You'll get big boobs, abs, thicc thighs, thicc in general, tall height, tan skin, futa, yuri, transformation, gender-bender, tomboy/feisty, dominant female, netorare, monster girl, humanization, twincest, vanilla, every category Peach already falls under (i.e. void of or your choice of all of the above), all the fetishes from the dresses (princess gown, wedding dress, leotard, corset, the legendary armpit and peeking sideboob) and you're still missing the fetishes you're too afraid to mention get your gears going.
It's only a matter of time until cat suit variations appear, and by then we've already got way too many fetishes for a single waifu.