Q.What Upright Perennial Could I Plant Against A West-facing Stucco Wall?
Zone 7, 2000′ elevation; wall absorbs a lot of heat; do not want anything that is high maintenance or spreads underground; prefer mature height to be 5-7′ with upright, narrow growth (2′ max). Will serve as backdrop for other perennials and small, raised bed herb garden in foreground softened by annuals, bulbs, daylilies.

Certified GKH Gardening Expert
Here are two articles that should help.
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-7/growing-flowers-in-zone-7.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-7/zone-7-year-round-plants.htm