The closest stem to the front of the picture clearly shows some well developed off-shoots. This is a good indication of 'Climbers & Ramblers' as Sheal mentions. As a tip. The long stems/leaders need to be tied horizontally to the support. These can be shortened, according to your plan. The side-shoots, now facing upright can be tied to the above wire or section of trellis or wall etc.
Thank you so much! Fantastic information. As I mentioned, I had never actually encountered one of this type of rose, but had of course heard of them. It's good to know how to control it, and what to expect.