Hmmm, Payen/Felpro gaskets are composit. While they may have some copper, it's several materials. I'm not sure why they would have it listed as copper.
When I recently "refreshed" my B engine I used a Felpro set upper and lower. Definitely nicer gaskets. For the few bux more that they cost I would definitely recommend them, especially for the head gasket alone. It's very forgiving.