How about Peter Bourjos? Climbing walls like he’s a professional wall climber and not a professional ball player. He’s known for his defensive capabilities and obviously you have to practice to get that good, but sometimes your glove falls over the fence and you have to fetch it. If you fetch your glove a lot in practice, you get really good at climbing walls. It’s science.
P.S. I honestly wouldn’t be surprised if he could scale a wall like in the reverse GIF. I could watch that all day.