Sure, here are the primary sources I used:
Pacific Coast Archeology Society: https://pcas.org/Vol35N4/354Johnson.pdf?
County of San Diego (courtesy of Pechanga Band of Indians):
https://www.sandiegocounty.gov/content/dam/sdc/pds/ceqa/JVR/AdminRecord/IncorporatedByReference/Appendices/Appendix-E---Cultural-Resources-Report/White%201963.%20Luiseno%20social%20organization.pdf?
UC Santa Barbara:
https://www.researchgate.net/figure/Origins-of-mtDNA-lineages-from-Luiseno-Cupeno-and-Ipai-communities_fig3_236686677

I avoided adding points where I felt the sources were not reliable, and I did not place names in ways that would overwrite or conflict with existing placename hierarchies. The intent is to document these names in OSM for potential future archaeological and anthropological reference, as many are not protected sites.

I will be reviewing and editing these points over the next few days so they meet OSM expectations, now that I’ve started learning how to best categorize and format them.