Can you add a photo of the spot? I am much better at suggestions if I know info such as amount of space, material and height of fence, distance from AC unit, distance from Euonymus, etc etc.

Arghh! I wrote a long answer and lost it.

You need something with woody stems and waxy leaves like the Euonymus, not the more delicate stems of the MG and clematis. Move the clematis since it won’t survive the between root competition from the Euonymus, the reflection from the rock and fence, and the hot breeze, all of which combine to create desert-like conditions. One of the honeysuckles with tough leaves may well work there (avoid Japanese honeysuckle for its more delicate stems and ability to seed everywhere.). Give at least a foot between the Euonymus and the honeysuckle. It will need a much stouter trellis. I grow my honeysuckle, Lonicera sempervirens Major Wheeler on a trellis of 3/8” iron rod. It will take a couple years to settle in and flower IME so if you need flowers now, try a large hanging basket on a shepherd’s hook. That may work well in the long run also to provide flowers, though it will need at least daily water, but it will be above the worst of the hot breeze. Anything planted in the ground needs to have weed fabric (if it is installed under the rock) pulled back at least a foot, and you will need to keep a close eye on soil moisture.

Another possibility is an annual vine in a tall, large pot that will get it above the worst of the AC wind. Something like mandevilla has waxy leaves and a woodynstem and is fairly drought tolerant for me, and I bring the pot into the house where it spends the winter in a front of a sunny window in a room that stays cool.

i can’t see much in your photo, but unless this is a frequently viewed area such as just outside a window or porch or in the front yard, I would just have the foliage of the Euonymus and not add a flowering plant since you don’t want to pull attention towards your AC units.

Thanks! This is our back patio where we have a dinner table and many potted plants. I combined euonymus with clematis and honeysuckle several places around my house. That fence has two sections - just to the right is another clump of euonymus and clematis. I'd like to keep the theme, so I might try honeysuckle. Ill decide whether to buy another or take a cutting from the dropmore growing a few feet away.

I'd like to get some more plants in that area to suck up some moisture. I figured a fern might get too dry from the ac as well. Any other suggestions for small, low light (less light than the spot pictured) plants to suck up water are apreciated!