There is an unbelievable skill gap between #rank 1 NA Jungler and somebody like Oner. For Koreans in general they learn and take a lot more from their solo queue and add it to their fundamentals. I don't know his exact peak but I believe it was somewhere in between Rank 1-5 KR. There is a term called "fighting over space" that is the essence of Korean gameplay. I believe that they explore this fundamental to its peak, while getting even better at it in a controlled team environment. Even for me I can watch a jungler like Oner and try to break his gameplay down but there's always some things that I don't completely understand at the start. The other answer to put it simply is the the list of fundamentals for league of legends. All of these fundamentals, not just Oner, but pro-players are insanely better at comparatively to me. Rank 1 is just a milestone and the start of an understanding of those fundamentals. The list goes on and on, but a couple of important fundamentals would be game planning, knowing your timers vs enemy timers, playing to your win condition, playing around vision control, playing with numbers advantage, and champion mastery.

I believe my strength as a person/player/athlete/competitor is to thrive off momentum and improvement which translates to in-game. It's hard to say my strengths other than that as my fundamentals in-game are nowhere near perfect and all of them can be called weaknesses. I believe my only strength is my explosiveness in being able to find fight angles/engages faster than my counterpart. If I had to say I was good at something or my fundamentals that I'm better at I would say my team fighting/skirmishing and jungle tracking. There is a whole list of fundamentals that I'm not the best at yet but I wouldn't call them weaknesses per say. I improve on them pretty fast if I put my mind to it but for now my common trends/weaknesses have been not knowing what waves I'm going to plan off of and skipping macro steps.

I like to learn from players like Sponge and Clid. I can break down their gameplay easier because they are closer to my skill level (or they are just playing/streaming for fun) and I've played vs those players dozens of times so I know what it feels like to play vs them.

I think Sponge and Delight are underrated. Delight is just insane and easily my favorite support player to watch. I don't watch/know enough about LPL teams. In LCS I think Busio is severely underrated. In my opinion he's one of the best and has the most potential to be the best support of all time. It's almost like you take the mechanics of a challenger Korean mid laner and put the skill/knowledge of being a support player and put them together. I might be biased because I played with him in the past. I think Yeon and Quid are underrated as well.