If there is already a lot of gravel/crushed stone there, then a prairie garden or alpine gardens or with native wild plants would not be wrong. If you choose plants that have high demands on soil and nutrient content, you have to replace the soil or you will no longer be able to manage the work.
Gravel, crushed stone is a good mulch for the right plants. Not everyone tolerates organic mulch. Ground cover plants on top and weeds/unwanted plants will be quite rare.
In theory, it is actually quite simple. The right plant, in the right location, no bare soil = little work
Maybe start a separate topic for it