NA Jerseys

Well they see every other sport having the same template of jersey, same style, just different patterns and colors. So things adapts, unlike in Korea where the main sport industry IS League of Legends, so teams like KT Rolster can bring some style from there designers.

I know Jinx makes some of them: https://www.jinx.com/page/jinx_pro

Meta threads makes Jerseys for TSM, C9, and IMT (they might make them for CLG too, but I can't remember atm).