Ah. I am sure you're right. I just thought a 9/10/11 SRAM cassette worked with the Shimano HG body (but may need a spacer) unless it has a 10t sprocket, in which case XD.
It's exactly ^ this ^ type of hassle that has me stuck on 10-speed friction-shifting!
There's the SRAM cassettes too (PG-1170 is 11-36?).