I dont recall the name of the novel but the MC was the leader of a S grade hidden influence in a game. Journey to become a "shadow king" to be the true leader of the influence
Not that one, the novel I'm looking for was a game world not isekai fantasy world A tidbit I remember from the novel was the MC using his S grade organization to get npcs to spread false info or gather info from players
This one? I haven't read it but it was popular for a while on this site To Be a Power in the Shadows!