I have a similar query, but wasn't sure of the best place to post my issue, so will reply to this to see if like minded users have experienced the same problem.
I've been using the catalyst for a few hours of collection now using the latest version of Collector, and have noticed that on some occasions it collects gnss metadata as a Samsung internal GPS, and other times it collects as Catalyst RTK. On both occasions, the TMM has achieved RTK lock and on both occasions the accuracy is 1-2cm. The only difference is that when it records the collected point with the "Samsung" attribute, it's missing a load of other ESRI gnss attributes such as no. satellites or direction of travel etc.
Anyone else noticed this? Obviously, I've followed all the recommended developer settings and have set up a GPS profile in Collector.