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.
Your range is equipped with a variable broil feature which allows you to broil at temperatures from the broil setting to temperatures down to 350 degrees F. Broil with the door closed, for a cleaner, cooler kitchen. The smoke from broiling is consumed as it is drawn over a rod-type broiler element.