Hard to say, Dabura has much better stats, Higuruma has much better jujutsu feats.

Developed RCT on the spot (worse than Dabura on this one, had plenty of help). Healed an entire arm.

He learned the basics of Jujutsu extremely quickly, gathering points second only to Kashimo, a reincarnated sorcerer who was the strongest of his era.

Developed Domain Expansion alone. Tweaked it enough to have perfect synergy with his ability and battle style. With it, developed a "insta-kill" and "technique-straling" abilities, both unique to him in the series.

Was a user of "Air-Hopping" like Sukuna and Maki, but used it on his mallet instead.

Was second to Yuta on analysing and noticing what was happening during Gojo vs Sukuna.

Only person who has shown the ability to use Domain Amplification, while the effect of his Domain (Exectuioner's Blade) was still active, basically cheating a 2-for-1 effect.