What challenges does Kindred bring for current junglers (ie. how do they differ with their strengths/weaknesses compared to the current standard junglers)?

Compared to standard meta junglers Kindred is lower on base stats and has less immediate dueling power. Their clear is really safe (very high health) but not incredibly fast. Most importantly, their late-game potential is much higher but accessing that potential means making risky plays to get passive stacks throughout the game.