For PS return hose, Gates Lock - On or the Dayco equivalent works fine. Transmission cooler hose works too. There is some really thick wall stuff that doesn't seal so well so I avoid that.

Standard fuel hose will work in a pinch though long term it will deteriorate, the lined barrier hose may have a better chance.

I used 3/8" Gates Lock-On hose for my thermostat hsg bleed to coolant pressure tank and it clamped just fine.