I have a 2019 Ram 2500 MegaCab with 5,100 miles that has all of the gremlins, the first one noticed was the rattling cab mounts. I have been working with my dealer on this since Feburary 2020, they did the TSB but it has not completely fixed that issue. I have been getting a popping/clicking that can be felt in the steering wheel when turning, I have recently found that it is coming from the end of the steering drag link at the right wheel.
After doing some digging I found a Star case addressing this issue, the number is S2019000004. There is also one dip in the road just a bit from my house that makes the front right clunk when I drive over it. I dont know if the two a related but I am gonna take it in to have the drag link replaced and will see if it still does it afterwards.