Board Thread:Theories and Speculation/@comment-26005711-20160525153248/@comment-27120850-20160619040827

1. Kaguya (no question about it)

2. Momoshiki + Kinshiki (his Rinnegan powers are too OP, no can really land any taijutsu on him except maybe Guy)

3. Hagoromo and Hamura (I'll assume they are about equal in power, because they are brothers, with Hamura being an experienced user of the Tenseigan and all)

4. Twin-Rinnegan + Rinnesharingan Juudara (nothing to be said, he's fairly close to Hagoromo's power)

5. Juubito (basically a weaker version of Juudara)

6. Prime Naruto and Sasuke (together they could match Juudara and Momoshiki + Kinshiki)

7. Toneri (displayed very effective ninjutsu at such inexperience with his Tenseigan, imagine him if he were experienced)

8. Guy (he isn't anything compared to anyone else on this list until he activates his 8 Gates, wherein he could decimate anyone in a matter of seconds)

9. Hashirama (not much to be said, just has an arsenal of extremely powerful Wood Release techniques)

10. Healthy Nagato (his mastery over Pain and the Six Paths of the Rinnegan would overwhelm and confuse his opponents, plus he's a sensor)

Side note: I did not include double Mangekyō Sharingan Kakashi because he is just way too hax. Nor did I include Hiruzen, his reputation as a fighter just too based off hype, no evidence to support.