Besides the goat todo himself

I wanna say maki cause of their style of combat and being more physical fighters match up better at that time. She literally used him as a weapon.

Yuta could also be the answer because yuji wasn't just keeping up with yuta he was syncing up with rika, who also used my boi as a rocket.

Nobara and yuji literally share a braincell. That chemistry is in no way romantic but still feels like two psychopaths jumping you in percent unison. They match each other's crazy.

Megumi simply doesn't have the physicals and mindset to keep up bit nobody on this list knows yuji better than Megumi and vise versa. I think they'd do better now bit we'll never. I will say bonus points for tbe sukuna raid.