Each brand is trying to find a way to get a leg up on the competition in a tight market space. The above picture is what I found on my last grocery run. What caught my eye was the asterisk next to the non-GMO popcorn claim. My guess was the ingredients list would include soybean, canola, or corn oil.
The temperature for broiling in an oven is 260 degrees Celsius or  500 degrees Fahrenheit. Medium heat is about 177 degrees Celsius or  350 degrees Fahrenheit.
broil 1. 1. to cook by direct heat, as on a gridiron or in a broiler; grill. 2. to make very hot; scorch. 3. to be subjected to great heat; become broiled. 4. to burn with impatience, annoyance, etc. 5. the act of broiling or the state of being broiled. 6. something broiled, esp. meat.. broil-cook under a broiler; broil fish. oven broil. cookery, cooking, preparation-the act of preparing something (as food) by the application of heat; cooking can be a great art; people are needed who have experience in cookery; he left the preparation of meals to his wife.