The game show Top Club, which was made by Grampian, was also shown occasionally on STV. Don't think it was ever shown on UTV though.
One show from UTV that I remember seeing on a Friday night on STV twenty years ago was Kelly, a talk show. I don't think this was shown in England.
Yes, I think it was shown on Scottish Television, but not Grampian or Border. It still got an "Ulster Television production for ITV" endcap despite only being on two stations.
The cookery programme "Highdays and Holidays" was shown on Border at one point, but didn't have a "for ITV" endcap presumably because it was made for local viewing only and later sold to Border.