I'm didn't encountere exactly the same problem but maybe similiar. I switched to an iPhone 12 and for the photos I have taken with the new device, Lightroom is offering me only two of the Adobe standard profiles and that’s Color and Monochrom. For all pictures taken with the iPhone 11, I do have access to all of them such as Landscape. I’m using Lightroom mobile 6.0.2. What kind of smartphone are you using?