Naruto's BM, KM, and all other chakra based attacks will have no effect on Nagato because of Preta Path, even his Taijutsu will be affected using the 2 Modes. That leaves his Sage Mode and Base Mode and that against Nagato, who uses all 7 Paths in 1 body on a far more powerful scale then he did when he was using Pain, doesn't stand a chance.
Obito, it's taking BM Naruto, Kakashi, and Guy to fight him and he still has the control of the battlefield. BM Naruto can't touch Obito without Kakashi's help, I don't see how Naruto can possibly win or even tie with Obito.
Hashirama was known for being able to control Tailed Beasts & can suppress Jinchuriki's power with
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, leaving Naruto only with Sage Mode and his Base, now do you honestly believe Naruto can beat Hashirama in that state, the man that stopped EMS Madara & Kurama together?
Also, I put Minato above Kabuto because of his Sealing abilities, FTG, being known as the fastest Shinobi that ever existed and his intelligence. Kabuto isn't that hard to defeat for a lot of Shinobi higher then him and the only reason Kabuto is constantly put in people's top 5 or close to it is because of Edo Tensei and as I mentioned above, Contract Seal renders it useless. With Naruto, even though he's stronger as in physical strength, Minato's far more intelligent, still
probably faster, has a vast arsenal of Sealing abilities, and FTG. He did something Naruto is having the biggest trouble doing, defeating Obito and he did it within moments of thinking of a plan 1st and still had enough chakra to take care of Kurama with it's full chakra supply, that's why I put Minato > Nartuto & Kabuto.