At present, my iNaturalist observations are completely about Graptopetallum Bartramii. Aside from timing of flowering and some unshared altitude range, Graptopetallum Bartramii and Graptopetallum Rusbyi look the same to my eyes; By revisiting many locations, I've been able to confirm the flower timing of my observations is that of the Bartramii---and the altitude range matches it as well. 2021's extreme dry and heat prior to monsoon season appears to have challenged Bartramii. The populations I've documented have been greatly reduced, and some lost completely. Although, monsoon was so abundant that those remaining made many seeds, and I hope to see new populations in the upcoming years, finding their way to places appropriate to climate change.
Here are SEINet links to Graptopetallum Bartramii and Graptopetallum Rusbyi, in order:

http://swbiodiversity.org/seinet/taxa/index.php?taxon=Graptopetalum+bartramii&formsubmit=Search+Terms
http://swbiodiversity.org/seinet/taxa/index.php?taxon=Graptopetalum+rusbyi&formsubmit=Search+Terms