I'm at a dealer, so we use our parts exclusively unless working on brand X.
Many SMH parts for off brands will cross over to Raymond.
I have found some SMH parts are the actual original OEM part, re-packaged with with SMH part #....but a bit cheaper than the same dealer part. It's a hit and miss. Some aftermarket parts are fine with no issues. Many common parts are made exclusively by one manufacturer, and fit most forklifts. Take a deadman switch from any counter-balanced forklift out there. I have Daewoo, Cat, Raymond.....all come with the exact same deadman switch.....that you could buy at Sears for your lawn tractor! Take a close look at one on any seat from any manufacturer....you will find a warning that on the switch that reads " Be careful of spinning blades" So next time you are stuck waiting for a deadman switch, try Sears!