-BSM Minato
-Alive Nagato + six paths of Pain
-Alive Hashirama
-EMS Madara
-DRMS Madara
-Juubito
-8Gates Guy
-1 eyed JJ Madara
-Double Rinnegan Shinju JJ Madara
-Kaguya
-Toneri Otstsuki
-Momoshiki Otsutsuki
-Fused Momoshiki
The first five aren't even worth an answer, he soloes even all of them together.
Juubito gets defeated easily, he is much, much, much, much, much weaker than Kaguya, who Kakashi could hold his own against very well, countering her techniques, defending from her, attacking and wounding her. Juubito's firepower is useless against Kamui phasing and teleporting, Kakashi's PS cuts off the Juubi Dama tree. Kakashi teleports behind him and cuts his head off with a Kamui Raikiri blitz, warps away Obito with Kamui Shuriken barrage, warps away Obito with long range Kamui which he executes faster than Kaguya's S/T which blitzed Sasuke who reacted easily to Linbo.
Kakashi vs Guy is very interesting, but in the end Kakashi's phasing is too good against Guy, especially considering his level of reaction speed, he isn't physically as fast as Guy (even if with the Kaguya blitzing feat he shouldn't be that far from), but he can react to his attacks and phase through them with Kamui.
Juudara gets killed easily, the same as Juubito. Raw power is useless against Kakashi and he can't defend from his techniques.
One eye or all the eyes for Juudara don't change anything, he still loses to Kakashi. By portrayal, Kakashi could take on Kaguya, a far stronger opponent than Madara, and by feats Kakashi can avoid whatever Madara can dish on him (even Mugen Tsukuyomi can be avoided easily simply by Kakashi teleporting himself in the other dimension and waiting), while Madara can't avoid Kamui Raikiri, Kamui Shuriken or long range Kamui, and once Kakashi warped him, which he will do, Madara can't leave the Kamui dimension. Long range Kamui is faster than Kaguya's S/T which was too fast for Sasuke who could easily react and intercept Linbo, so Kakashi with Kamui can oneshot Madara faster than he can oneshot him with Linbo. Which would be useless anyway if Kakashi camps in PS or with phasing.
Kakashi can give a fight to Kaguya, a very hard fight, we witnessed that already in canon manga. But in the end he gets outlasted and loses, he can't kill Kaguya who will regenerate forever, and he can't seal her, with Amenominaka she will come back even from the Kamui dimension.
Toneri is a joke for Kakashi, he was defeated by a stronger Naruto than the one who fought against Kaguya, but who used a small part of his power compared to the power he used against Kaguya, and still defeated Toneri mid diff at worst. Toneri can't even dream to hit Kakashi due to Kamui phasing and to Kakashi teleporting around and flying with PS, and Gudodama are useless against Rikudo chakra enhanced attacks or against Kamui techniques. Toneri gets oneshotted by a PS slash, Kamui Shuriken, long range Kamui, Kamui Raikiri blitz.
Kakashi could fight very very well against Kaguya, both his offense and defense were effective against the Chakra Goddess. Who is far more powerful than Momoshiki. Momoshiki absorbs chakra and ninjutsu, guess what we've seen a lot of chakra/ninjutsu absorbing/nullifying powers, and no one ever worked the same against Kamui powers (for example: Gudodama nullifying ninjutsu out than senjutsu chakra/Rikudo chakra ninjutsu... and yet Kakashi's usual Kamui working on Madara's Gudodama in chapter 669; Kakashi perfectly knowing about the Rinnegan's Preta Path and yet not even thinking that a Rinnegan wielder could have absorbed his Kamui when he tried to warp away the Gedo Mazo in chapter 595). Kakashi phases through whatever Momoshiki throws at him, teleports at his back, and decapitates him with a Kamui Raikiri blitz which not even the much more powerful Kaguya, even in her furtherly enhanced form after absorbing chakra from the Mugen Tsukuyomi victims, couldn't avoid. Kamui Shuriken spam also negs Momoshiki. Long range Kamui also negs Momoshiki.
