I once saw English ivy gown on a chain link fence with an arch over the front walkway, which so hid its ugliness and created a picture of such charm that I was filled with a wild and jealous lust.
Who could have imagined that a "hedge" could be created in such a narrow space? It was closely knit and shining green all the way to the ground.
I would plant a variety with small or small-er leaves, and I would NOT plant anything else in with it. This will look horribly weedy and untidy, the plants will always be "fighting it out", and the pruning would be a nightmare.
I want to stress that this was planted in a front yard, where the owner cared for and pruned the plants immaculately.
I know what you are talking about concerning a "back property line in shade". I had one myself. English Ivy may decide to scramble up the fence, but it is going to be more excited about scampering over acres of land seemingly overnight, and it is almost impossible to eradicate.
Honeysuckle will grow on a shaded fence on a back property line. It will lose its leaves in the winter, however, so you will lose much of your privacy. It also sends long, searching, wandering arms everywhere, into shrubs, trees, thickets, looking everywhere for a handhold, not just the fence.
Almost any vine you choose is going to do this. They are called "vines" for a reason, and this is because they reach for the stars, cover large tracts of land, in their plan to take over the universe. By the way, in many cases, ivy and other ground-covers or vines can and will kill all other plants, native or cultivated, that get in their way.
It sounds like you want the plant to remain fairly narrow while providing coverage in a narrow space. A more expensive but long-term and solid alternative, which I finally gave in and invested in, and never regretted, is an evergreen hedge.
DO NOT select hedging plant material that mentions any kind of "spread". You will regret this for the rest of your life. Be on the lookout, instead, for descriptions which stress "upright growing", if you are looking to fill a narrow space.
Take a look at something like Evergreen Arborvitae, The Latin name is Thuja Occidentalis.
This was a viable alternative for me. It was quickly upright growing, didn't have such a spread as many other plants, was evergreen, required little if any pruning, and provided excellent privacy. There are a number of varieties and hybrids as well, which give you alternatives as to color or habit.