I’ll give you a rundown of my favorite junglers and their strengths and weaknesses.
Strengths: His clears and sustain are strong. His ganks are SUPER strong. He can tank very well and he has a lot of CC. Decent counter jungler and one of the few remaining champs that can reliably gank at level 2.
Weaknesses: Late game, he can only snare one person, so he’s not that great for initiation. His damage disappears after the 20 minute mark. You are a glorified support champ who is incapable of chasing down and killing anyone, essentially.
Strengths: His ganks are very strong. He is a carry killer. He can dive the enemy carry and trap him for your team to collapse on them. His ultimate is the single most effective flash buster in the entire game. He’s tanky and gets a lot of free stats/damage from his passives.
Weaknesses: He can’t really carry a game. Late game he is great at targeting one champ, but more times than not he will die in his cataclysm, therefore you rely on your team to clean up. He doesn’t have good sustain his first time through the jungle.
Strengths: His ganks are stupid strong. Run in, turn your E on. Run behind them, knock them back into your teammate, turn on your W and just start spamming Q. It’ll pop their flash and possibly get them killed even if they flash. And that’s just his pre 6 ganks. Level 6 ganks are the equivalent of a Malphite level 6 gank on steroids. He can build tanky and still deal plenty of damage and his mobility and chasing power is off the charts. He snowballs out of control unless shut down.
Weaknesses: Very susceptible to counter jungling early. He takes a lot of damage in the jungle early and can’t really duel. Due to his lack of ability to duel, he isn’t really a counter jungler. He can counter jungle quickly if he sees the jungler on the opposite side of the map, and his E lets him escape pretty well, but if he tries to go looking for the enemy jungle, he’s in trouble. Due to his snowball nature, he’s kind of a hit or miss pick, but he hits much more often than he misses.
My absolute favorite jungler is Hecarim and he is essentially never banned (less than 1% banned). And given your penchant for liking tanky damage dealers like Lee and Nocturne, you will like Hecarim the most of all the other junglers, I think.
Hope that helps.