Butter Pat cast iron skillets are USA made and just about as non stick as possible.
I became a hunter of Griswold skillets etc. This is a picture of me with my #14 Griswold skillet that I used quite a bit in chili cookoffs for browning my meat, peppers and onions together. I put on a bit of a show for the crowd sitting at my propane cooker browning everything up in a circa 100 year old skillet.