Strongest Nin 1st Animal Path can defeat?

[Bad Touch Yakushi]

This is the one who battled Jiraiya. My all-time favourite fighting style. Anime feats allowed.

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Invisibility. Flight. Huge destructive Rhino capabilities. Unkillable Cerberus summon. More. ​

 

[FemmeFatale]

I would said hinata...maybe

 

[Bad Touch Yakushi]

I would said hinata...maybe

I hope you mean Adult Hinata. And even then, Byakugan gives her a massive advantage against the invisibility.