It’s hard to powerscale konan because she has barely any feats or solid statements.
She has one feat of pushing obito to use izanagi but she had a lot of preptime, so most fans discredit it. Her other feats are not canon like her defeating sasori and his 3rd Kazekage puppet when recruiting him in the Akatsuki Creation OVA in storm revolution
She was shown Fighting the aburame clan off, the aburame clan is considered one of the 4 noble clans in konoha has the most jonin of all the clans in the leaf so that puts her at High Tier Jonin level atleast. She’s also a sensory type ninja and a long distance fighter. Her paper is unaffected by water and can overpower fire style
She's an exception in the akastuki because she wasn’t recruited by obito or scouted by zetsu but in the Akatsuki full bloom novel, obito didn't want to kill her because keeping her around would make nagato comply, so she's the only one not selected specifically for her power. Which also contributed to Obito underestimating her.
Jiraiya did make her look weak by one shotting her but her weakness is oil and Jiraiya knew her weakness. Her paper was strong enough to cancel out a firestyle.
she was able to keep up with obito, and blow him up,(even before the sea of paperbombs) she broke his mask and blew his arm off not to mention she did better against him than the root members fuu and torume combined. She was the second person to significantly damage obito besides Minato at this point. Making her atleast kage level
Conclusion, Jiraiya’s student are all certainly strong. I would say Konan is Low Tier Kage level. And definitely one of the strongest Kunoichi in the series
