Mine doesn't detect on default, but if I select Sony from the drop down list and then look at lenses, I get the same as you are getting as the default. I do architectural shots so would like the full support for my specific camera with it's lens.
I'm sorry , I did not give you the complete information, I did download the RX100 lens profile with Adobe Lens Profile Downloader.
Hope thats making it more clear to you.
Frans