Do you mean anything special by 'shoulder' strap, or just a neck strap used on a shoulder?
I've been using old Tamrac straps for my cameras for about 15 years now. I have two, one for each shoulder, and I just move them to the newest camera. Just moved one from D810 to Z9. I like these a lot - they are almost perfect, for me.
I used to use Op/Tech neoprene, except I hated them anytime I had to jog or run a bit. They were so stretchy that they bounced the camera more and more as I ran. On top of that, the shoulder pads were slippery so the straps just bounced and slid off my shoulders.
Hence, the Tamracs. I picked a model with a suede pad, so there is some padding and it is non-slip. I picked a model with quick-disconnect straps so I could get rid of the bulk of the strap when working on a tripod mostly. And the model I picked (no longer made) had a pair of SD card holders on each strap, making for a convenient emergency backup card storage. Newer versions of the strap don't have these, which is no big deal.
I also have a Rapid Strap somewhere, which I no longer use. Did try it for a while on a 70-200, but I just don't shoot that way much.