Looking through the current list, I think
Henry Stickmin should be able to take 4th
9-B, he either hard counters or can ignore just about all of the Aburatori's abilities
The skewer hax won't work since they need to be able to damage their target to work, which won't be happening with Henry's near 1,400x AP/Durability advantage which he can amp to a far greater degree with various equipment (With several of Henry's items letting him no-sell attacks that would normally one-shot him such as bullets)
Timeline fuckery won't work due to Henry's type 1 Acausality
Absorption, if I'm understanding the profile right, requires the Aburatori to actually defeat Henry beforehand, which he
can't do
Invulnerability wouldn't matter too much since Henry has multiple ways to win that wouldn't require him to harm the Aburatori, such as Morality & Mind Hax or Possession
The only real problem would be destiny hax, which still probably wouldn't be enough to give the Aburatori a win, since it can only achieve
possible destinies without the Aburatori sacrificing their powers (Which I imagine isn't particularly in-character to do), and the Aburatori has no actual way to harm Henry, let alone kill/beat him, meaning at best their destiny hax would just cancel out Henry's Supernatural Luck due to avoiding scenarios which are more favorable for Henry (Which makes things more annoying for him, but it doesn't actually prevent Henry from winning)
Henry also possesses a nice speed advantage that would make getting off his winning hax/avoiding anything the Aburatori throws at him much easier (~6x in movement speed, ~52x in reaction speed) which means that if he can't fully take the spot, he should at least share it with unequal speed