Basically, yes. But every manufacturer plays around with the blend somewhat. They choose different base oils, add their own mix of proprietary additives, etc. So long as the end product meets the specifications set out by the end user, it's good to go.
A couple of months ago I was messing around with "home brewing" some auto care products to see if I could make them cheaper than I could buy them. Found out with most of them I can't. But it was very interesting to discover what things the different brands used to make their famous products. I tried to find common chemicals that I could get access to to use in my home brews. AW32 hyd oil was one of those base ingredients.
