An Instagram user who has more than 5,000 high-quality followers and fewer than 1,500 followings (and is therefore not identified as a mass follower) is considered to be an Influencer in the Audience Type section.
Note that the number of followings takes priority over the number of followers when assigning an audience type. This means that if a user has more than 5,000 followers and more than 1,500 followings, they will be classified as a Mass Follower rather than an Influencer.