I recently found several southwest quilt patterns. Free one by Suzyquilts:
https://suzyquilts.com/warrior-quilt-pattern/
Navajo throw by Quiltfox:
https://www.quiltfox-design.com/prod...w-size-56-x-78
And this designer as well:
https://www.jmichellewatts.com/shop-1
Midnight quilt show has a video caled modern southwest quilt, but the pattern was on the old blueprint site.
https://m.youtube.com/watch?v=5uAvLlpL2j4
You can also look up a block called Delectable Mountains if you want to try to design something yourself.