Hi everyone. I am using a Canon RF 24-105mm f/4-7.1 lens attached to a Canon EOS RP. At 24mm, this lens suffers from terrible vignetting and distortion. When I go into Lightroom CC, the lens profile does not appear under "Enable Lens Corrections" for all my RAW files (CR3s) except one. This tells me that Lightroom CC supports the lens, but for some reason very inconsistently. What explains the fact that it shows up for one of my RAW files but not the others?
If only EF lens profiles are showing, it sounds very much as though you're actually processing a Jpeg files, not a Raw file. The vast majority of lens profiles made by Adobe are specific to Raw files, so if using a Jpeg only the very few profiles made for Jpegs will appear in the list. For Canon there are only about 15 lens profiles presented (mostly for EF lenses) when using a Jpeg.
So, can you re-check the file-type of the images that you are working with?