Honestly, this is common to a whole lot of jungler nowadays.
Jarvan and Vi are the 2 most popular nowadays.
Vi has S+ Ganking, good clear times and overall stupid damage.
Jarvan just has one of the most well rounded kit. He does everything well and has many different play styles which allows him to adapt to his teamcomp no matter how fucked up it may be.
But there are many others just as strong currently, they are just slightly riskier or don't scale as well as Vi and J4 do.
Pantheon.
Pantheon has stupid early game damage, amazing clears, good engage, amazing ganks with his Point&Click stun and overall very good Dragon Control.
He however, falls off after mid game and literally becomes a melee stun bot.
Not because his numbers and ratios are shit, but because his playstyle forces him into it. He plays like a burst caster, but he needs to be in your face to deal damage and he has no way of avoiding incoming AoEs or Damage Mitigation whatsoever. I mean, his passive is good, but it won't help against an enemy Shockwave. Unlike Riven who can just mash her Q and E button to dodge or Garen who can just press W and become unkillable, he won't be able to survive if he is caught in the middle of the fight.
Lee Sin
He is like Jarvan. He can do everything well. Yet he can't do everything perfectly.
He is wayyyy more overloaded though. Everything you could possibly want on a champion, he has it.
The only thing he is lacking is a Stealth mechanic tbh.
He has unmatched mobility, great damage output and good Base damage. Sightstone makes him 10x better.
Wukong
He simply gets outmatched by Jarvan in a lot of ways. Yet he scales better. A lot better. His ganks aren't as deadly because he doesn't have any form of slow or hard CC, but since they come from stealth and he has good burst damage, his mere presence is usually enough.
Xin Zhao
Feels exactly the same way as Pantheon.
His base damages are fine and his ratios are good. His play style forces him to go tank tho.
Fiddlesticks.
He is probably the most broken jungler in high elo SoloQ.
He keeps getting banned over and over again in Challenger matches just like Amumu, Shen and Malphite used to get banned in Bronze/Silver.
Extremely deadly ganks paired with 2 forms of Crowd Control and a Drain.
If he gets ahead of you, you are fucked.