While Whalen sometimes uses classic nacho cheeses like Cheddar and Monterey jack, he also uses a wide variety of cheeses that are less traditional.
Different cheeses are like different guests at a party—the each add a different texture and personality.
Industrial shredded cheeses are packaged with anti-caking agents which means they won’t yield the kind of gooeyness you might typically associate with nachos.
Double cheesing has apparently double benefits, it helps the toppings adhere to the chips and keeps the toppings from making the ships soggy.