Hum I'd say Kisame as he was compared to a tailed beast.
But I'd say too Hashirama, 3rd and 4th raikage who are chakra monsters in the same level or more.
For Madara, I won't count him since all his "normal body" feats are from Edo tensei, and edo it's chakra free. But I'd say under hashirama and at least same level as Kisame.
Nota bene: Sasuke is like Itachi: Weak ass reserve, a little more than Kakashi.
His false stamina come from both Kishi incapacity to follow his own rules and the fact that until the operation, karin reloaded his batteries. ( Remerber his last "true fight" against Itachi, when he didn't got asspulled powerups, he got empty really fast.)
But I'd say too Hashirama, 3rd and 4th raikage who are chakra monsters in the same level or more.
For Madara, I won't count him since all his "normal body" feats are from Edo tensei, and edo it's chakra free. But I'd say under hashirama and at least same level as Kisame.
Nota bene: Sasuke is like Itachi: Weak ass reserve, a little more than Kakashi.
His false stamina come from both Kishi incapacity to follow his own rules and the fact that until the operation, karin reloaded his batteries. ( Remerber his last "true fight" against Itachi, when he didn't got asspulled powerups, he got empty really fast.)