Way back when, I worked in that industry and a very common mold release was soybean lecithin, which is also used in cooking as a food release. (Think PAM which is sold in the grocery store.) We bought it in industrial quantities instead of one spray can at a time, but it was the same stuff. The big reason it was so popular is that it was obviously non-toxic, and it didn't have to be extensively tested.
I remember that stuff...and there was the old standby,
polyoxyethylene-monostearate...pretty much purified LARD!!, that we used on assembly equipment...