As you may know, there isn't a default report within Track-It! 11.x that returns machines that aren't ready for a Windows 10 upgrade.
However, you could perhaps export an existing one and then use it as a template. Most likely, it would be a case of updating the selection criteria with information against the windows 10 standard spec.
Alternatively, you could investigate using a third party within your region to provide a report writing service.
I hope this offers some considerations.