Here is a list of some of the most well known users and a team/player/activity they are very devoted to (not in any particular order)
1) Olofboost, Gambit
2) HackNaiga, Soniqs
3) PrTsty, 100T
4) number_1_bjor_fan, Bjor
5) Netero, Hating on anything that isn't NA Valorant