You haven't answered my question, for one. Instead, you went on about how more people own PS4s than Xbox Ones or something, despite you oriignally talking about how the GT community was not Xbox oriented. I wanted to know which community was, but instead you go on a tangent that had nothing to do with what I asked. You made it seem like you knew of community top 10s from other gaming communities that included Halo 5, so I wanted to know of them. So how does that not appear to be defensive?
Persona might not be as niche as you think it is. I would say it's currently on the level of Bloodborne and Xenoblade Chronicles X in terms of renown with enthusiasts.