whats the most important champion for jungle except nidalee

i know the important roles for top/mid but outside that im just wondering the plans for someone that does only jungle. i see many players that pick Zac, Reksai, Graves, and solo ruin the game for the enemy team. i cant remember how many times i got carried w these junglers and in rare cases nidalee too. i personally i dont care what champion as long as the jungler that knows the jungle (gets dragons, fights in the jungle, keeps the jungle clear, and gank the ones pushing) is what matters.