Having a device enrolled in an MDM package does not make it a corporate device. Many corporations require personal devices be managed to support remote wiping. If I install a productivity or developer tool on my personal phone or laptop for personal non-corporate use I would get mistaken as a corporate user by this process.
If you want to collect this information you should be clear about it and know and understand your edge cases before you start attempting enforcement actions based on it if that is the intent.
In general in my experience, personal tools are a VERY hard market to sell into for corporate environments (I took a peek at what the software on OPs site requires a commercial license to use). I would bet most if not all of what you're catching here is unauthorized installs in a corporate environment and you're more likely to loose interested users than sell more commercial licenses.
If you want to collect this information you should be clear about it and know and understand your edge cases before you start attempting enforcement actions based on it if that is the intent.
In general in my experience, personal tools are a VERY hard market to sell into for corporate environments (I took a peek at what the software on OPs site requires a commercial license to use). I would bet most if not all of what you're catching here is unauthorized installs in a corporate environment and you're more likely to loose interested users than sell more commercial licenses.