The ones who are never really active in your community. These will unfortunately make up for more than 90% of your audience and there’s nothing wrong with it. A lot of people prefer just navigating through conversations, while others might just be looking for something in particular. Once they have that, they’re most likely to leave or hover around every once in a while to see what’s going on.
A superfan (can also be called a creator) is someone who has reached a point where they can influence activity within the community. This person is now a content creator and is always active in the community - asking questions, brainstorming ideas, replying to posts, and reacting to them.