In my view..the true genius char in Naruto will be:
1.All of them has no KEKKEI GENKAI
-sandaime is known as God of Ninja which master and using all jutsu exist in Konoha and the most important, he master all that jutsu all by himself (not copy like KAKASHI and other UCHIHA losers)
-Jiraiya one of the strongest and fines shinobi in naruto (state by Yondaime)..even equal or better than PAIN (at one point) who was blessed with Rinnegan..The GREAT TOAD SAGE has a prediction for him out of all people and the most important, he got it with his own talent and strengh
-Although as a bad char, he developed many S-Rank kinjutsu and and Edo Tensei is one of the best jutsu in naruto..even Sandaime recognized him as one of a decade genius
- Tsunade & Sakura, although tsunade is considered the weakest member in SANNIN, but her healing and medical jutsu had brought victory for KONOHA in GREAT WAR..in term of battle, Irou Ninjutsu is the deadly weapon..one slight touch can kill in instant, far better than Hyuuga's Jyuuken..Same goes for SAKURA..
True genius for me is someone who become very strong all by himself (not depending on bloodline limits abilities)..who is ITACHI without Sharingan?? Anyone who have bloodline limits cannot considered as a genius..SPECIAL
is more suitable word for them..
Perhaps, many people here won't agree with this
, feel free to give ur critic and reason for ur points..