Read the bios and the business model is right there. Many of these accounts sell something of their own: a workout program, an author credit, a podcast, a television series, a hydration brand. Many also route enquiries through a named management company or a direct collaboration email rather than a DM, which usually means a faster and more professional brief cycle.
The second pattern is cross platform. Several bios point at a TikTok account, a YouTube channel, a podcast or a radio slot, and two of the biggest video franchises here live off Instagram entirely. If you brief only for a Reel you are buying the smallest part of what some of these creators can deliver.
Location signals cluster on the coast. The Gold Coast, Sydney and the ocean itself appear repeatedly in the bios, and several accounts describe living, training or working outdoors year round rather than shooting in a studio.