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Sorry yeah not a great Q
I was looking at Hydrangea's (serratifolia, seemannii, petiolaris) and holboellia coriacea as I wanted a consistent colour and relatively fast growing. Jasmine would be lovely but lack of sun as you say is an issue. Was also looking at Chillean Bellflowers as they seem to do well in full shade and look nice
Tenderloin-
If you can get an established star jasmine you may have better luck than me - mine were very small to start. Even with no flowers it's a nice plant. Then combine with some sort of camellia. There are so many varieties that you should be able to find something that suits your soil and location.
Idk if you know but GQT publishes the plant recommendations along with the questions. So you could browse the old questions as someone must have asked this.
hugo7
What do you mean by best? Coverage, evergreen, flowers?
I think a nice rambling rose is a good shout. Jasmine would have been my suggestion, but as you don't get sun then you probably want to try collins suggestions to me the other week:
https://www.lfgss.com/comments/15832807/
Star jasmine is also an option, although mine basically just survived when they were on the north side and took a million years to start to get going on the west side (heavy sun) and east side of the house. But they may have been a bad batch. Also I think I've had maybe 2 flowers. Although it does look nice now it's established on the front.