The latest thinking in this area is to stop trying to identify a demographic or market segment type and instead look to solve a task or challenge that you either solve or improve for all people that face that same task. Almost all successful digital marketing companies create a value proposition around solving a task and then let the market decide if they share the same passion as the inventor for the solution. Most task solving solutions have a wide a varied demographic. The context that unites the users is the task, rarely the demographic.
You seem to have selected both the channel and the analysis method. You've stated that you have social following but you're struggling to identify who to approach. Why not let the following decide. Early stage businesses rocket using social media only when they have something new to offer that's in context with the challenges faced by the user. Tools don't create the viral activity, they simply enable it. It's the innovation and clear value proposition that stimulates demand, not technology. I find spending several weeks working on the value proposition and strategy using proven frameworks is a great place to stress test if an early stage product can connect.