It's happened a few times here that I ask what seems like an easy to answer question and get crickets. No worries. I'm too lazy to create an account over at MTBR and maybe some of my inquiries will help others who are searching.

I ended up ordering the 7idp shoulder support. In my original post, I had mentioned that I wanted bilateral, not unilateral but I got to thinking about it. My left is the one I've been fighting an injury with, and the right is actually 2 or 3 inches lower than my left. That probably means the bilateral version wouldn't fit very well, it'd be all bunched up or crooked.

I've been happy with this company for knee pads. Seems like a better idea than some unknown stuff off Amazon.

I might post up later after some time riding with it, if I remember.

https://7idp.com/products/control-shoulder-support