Hello,
I think that if your minimum temperatures are -5°C, then you are lucky and can grow most true jasmines, like Jasminum stephanense, Jasminum sambac and sambac 'Grand Duc of Tuscany', jasminum officinale, jasminum polyanthum and many others.
All these vines are really worth growing. You seem to enjoy mild winters, don't hesitate to try them

Regards
Etto