if im not wrong koi bought %50 of rogue's league slot, so maybe they also did it for valorant
Because they are merging in LoL already. And Rogue has LEC spot in LoL while KOI has bunch of clout due to being owned by Ibai. Also Riot wants EMEA teams to represent different areas so KOI makes sense for Spain.
OG/Heroic/Guild over Heretics will be a good list eventhough they have huge fanbase. So it can cover most of the EU