Help with plant selection for gravel patch.

Hi all, I’ve got my first garden. I’ve previously grown some edible plants in pots on windowsills and outdoors and am so excited to have a whole garden to play with now.
I’ve already put in a raised bed and have started off some edibles indoors.

It’s a long garden with 2 patios, a deck, a lawn and a gravelled section. I’ve got bigger plans to potentially move things around in the future but for this year I’m starting small. There’s currently no plants anywhere, apart from a small leylandii hedge.
Where I’m really struggling, is figuring out what plants will work for the gravel section, it’s a layer of gravel maybe 5cm deep laid over weed suppressing membrane. I’ve read that I can cut into the membrane and dig a hole to plant. Everything I can find about planting in gravel seems to assume a much deeper gravel I’m seeing talk of plants that like free draining around their roots but that won’t be the case with my garden.
So is anyone could give me any ideas, including something climbing I can put against the fence.