Muu can go invicible and just evade Itachi's eyes.Your most of the candidates are total fail. :flaw:
1) Minato-Already a hot debate on this forum, and always proved that itachi wins. Itachi only because of genjutsu and MS techniques.
2) Hashirama Senju-Yes, probably, and since we didn't know his real power, i will say he can as he defeated madara.
3) Madara-Yes, because of his EMS and rinnegan.
4) Hiruzen Sarutobi-Probably yes, because he was the strongest hokage and has the most experience.
5) Sasuke (EMS-Susano-Amaterasu)-No, he is far away from itachi's level and intelligence and power.
6) Tobi (Rinnegan - Six Paths)-Yes, due to rinnegan and sharingan.
7) Kisame-Nooooooo, why the heck you put such a weak candidate?:flaw: Kisame himself stated that itachi is more powerful than him.
8) Muu-Probably not, i didn't see how he is gonna fight MS techniques and genjutsu.
9) Naruto (KM and SM)-Totally NOT. fool people didn't understand this. Naruto is too dumb to counter itachi's regular genjutsu, and got totally raped. He is gonna defeat itachi? O.O
10) Third Raikage-No, he is just a outraged, hot headed and powerful. No counter to itachi's intelligence and genjutsu.
11) Tobirama Senju-Probably yes, or no, we didn't know his real power.
12) Yes, oh yes, the one and only, the infamous rival..NAGATO-:flaw::flaw::flaw: And this is your biggest fail. This is also proved many times, nagato cannot defeat itachi. Ok, i agree that he cannot be defeated quickly as he did recently. but he cannot defeat itachi's intelligence, and other power.
Kisame is not weak. It's okay that you think Itachi can't beat him but he's not a weak shinobi.