I read a blurb about a recent addition to the class of white reflective, polymeric membrane claddings a few months ago. So, I think there are at least 4 being used.

In the Boston area it's almost always Sarnafil, which actually predates EPDM by a few years. Sarna, a Swiss company has only 3 plants worldwide. The original in Switzerland, another in mainland China and a 3rd a few miles from Boston.

Sarna embosses their trademark on the membrane (approx. 1/2 sq. ft) but it is subtle.