I can tell you that NOBODY makes boats for Ultra. Ultra does have a spin off line named lighting, but they are made in the same facility as the custom Ultras and the hull layup is identical. Maybe Ultra28, or Oldrigger can lend some insight into the manufacturing origins of your Canyon. As far as it looking spot on for a Commander, my dad and bro have a Carribean, looks just like a Commander, which looks just like a lot of other open bow 20'ers out there. One thing you could do is look up the hull ID against the USCG registry to see the location of the builder and get their phone number.
Good luck,
Chris