League of Legends Patch 10.22 has shifted the jungle tiers slightly with a few changes to a couple of champions. Karthus, who has been a dominant pick in almost any role had his Lay Waste (Q) damage reduced to slow his clear down. Amumu's Curse of the Sad Mummy (R) got an updated description to make its effects more clear. And Sejuani's Glacial Prison (R) received a damage buff.
The changes made to the jungle in Patch 10.22 aren't huge, but they certainly impact the viability of using different champions. Below is a tier list for the top junglers to play in Patch 10.22.
Jungle S Tier
The best of the best junglers combine mobility, damage, and fast camp clears to get to lanes and objectives quickly and efficiently. Hecarim makes the cut with his relentless speed that runs down enemies backlines. Joining him are Evelynn, Kha'Zix, Karthus, and Kayn. Aside from Karthus, each champion can dive and destroy backlines, which allows their team to clean up the remaining enemies. Karthus can clear camps and send his ultimate ability to deal suppressive damage without ever leaving the jungle, which allows him to power farm and gank at the same time.
Jungle A Tier
The A tier is where we find the more tanky and utility-style champions that are always reliable in team fights. Ivern, Zac, and Skarner are strong A tier champions that offer plenty of sustain and engage in those mid to late game fights that can swing the momentum of the match. They don't hold the same damage and carry potential as the S Tier champions, but they are great picks nonetheless.
Jungle B Tier
Warwick, Vi, Xin Zhao, and Ekko find themselves in the B tier in Patch 10.22. B Tier could be renamed the bruiser tier. These champions provide sustained damage combined with enough health and self-healing to last through any fight. They're rated as B tier because unless they completely snowball early, they rely on their allies to win team fights in the mid to late game.