JF - you've lost me there.
According to the website:
The V/STOL Wheel is a graphic diagram of all 45 types of vertical and/or short take-off and landing (V/STOL) aircraft that had been built and tested through 1996. It was updated from the McDonnell Douglas Wheel of the 1960s for the Joint Strike Fighter (JSF) Program Office.
So stillborn projects such as the Br.1030 do not appear on the Wheel.