Ok I’ll make a list right now, over each pillars performance. I’m gonna base this on the Mugen Train battle, since theoretically it would be impossible to beat Akaza in the Infinity Castle. So basically, replace Rengoku with another Pillar. So here it is in no particular order.

Mitsuri - She would survive, the reason for this is her muscle composition and range. She’s incredibly adapt to fighting at a longer range wich would mean Akaza would only be able to beat her with his Shockwaves. In his fight with Rengoku they appear to be weaker than his regular strikes. So she’d be able to Deflect them pretty easily. However since Mitsuri is so contradictory to Akaza’s prefered fighting style, Akaza would likely decide to just massacre the bystanders. In wich case Mitsuri would lose this battle, as she’d be incapable of playing offense against Akaza without dying.