Actually, reading this again, I have more to add.
So... if you have 10 downloads, maybe you have 2 professional-home-educators, 3 home-professionals, 2 home-educators, and 3 plain professionals. You're asking people to self identify in 2018 ... which means, like sex (where there are a _lot_ more than 2 kinds now), people do all kinds of wonderful things with their printers. Once could say your trinary pigeon holes are antiquated and looking at your question as a set of axis is more appropriate for the times.