I've lived in 4 states, widely spread around the country. I'm not an urban dweller.
In a typical supermarket, there might be dozens of types of cheese. Only a few types are orange. So going by type, it might be only 5% orange. Nevertheless, the majority of the cheese (by volume or by mass) is orange.
The store might stock one row of sliced baby swiss, for a total of 10 pounds. The store will do that for several ripenesses of Cheddar (mild, medium, sharp, extra sharp) times several brands, totaling perhaps 150 pounds of cheese... but that is just sliced cheese. The baby swiss is only available in slices. Cheddar is also available in small bags, giving another 200 pounds of cheese. Cheddar is also available in large bags, giving another 200 pounds of cheese. Cheddar is also available in half-pound blocks, in one-pound blocks, in five-pound blocks, in half-pound bags of cubes, and in one-pound bags of sticks. That is probably at least another 300 pounds of cheese. There could be half a ton of Cheddar on display. Add in 100 pounds of Colby and 100 pounds of American, and there is an awful lot of orange cheese.
FYI, most of the non-orange cheese is Mozzarella. Again, this is by volume or by mass.
People with simple taste in cheese can simply refer to it as "orange cheese" (Cheddar) and "pizza cheese" (Mozzarella).
The color is a very useful distinction. When you have both types of cheese in unlabeled containers in your refrigerator, color ensures that the pizza cheese goes on pizza and the orange cheese goes elsewhere. You don't mix them up. Without that color, you'd have to label the cheese or taste it before use.
In a typical supermarket, there might be dozens of types of cheese. Only a few types are orange. So going by type, it might be only 5% orange. Nevertheless, the majority of the cheese (by volume or by mass) is orange.
The store might stock one row of sliced baby swiss, for a total of 10 pounds. The store will do that for several ripenesses of Cheddar (mild, medium, sharp, extra sharp) times several brands, totaling perhaps 150 pounds of cheese... but that is just sliced cheese. The baby swiss is only available in slices. Cheddar is also available in small bags, giving another 200 pounds of cheese. Cheddar is also available in large bags, giving another 200 pounds of cheese. Cheddar is also available in half-pound blocks, in one-pound blocks, in five-pound blocks, in half-pound bags of cubes, and in one-pound bags of sticks. That is probably at least another 300 pounds of cheese. There could be half a ton of Cheddar on display. Add in 100 pounds of Colby and 100 pounds of American, and there is an awful lot of orange cheese.
FYI, most of the non-orange cheese is Mozzarella. Again, this is by volume or by mass.
People with simple taste in cheese can simply refer to it as "orange cheese" (Cheddar) and "pizza cheese" (Mozzarella).
The color is a very useful distinction. When you have both types of cheese in unlabeled containers in your refrigerator, color ensures that the pizza cheese goes on pizza and the orange cheese goes elsewhere. You don't mix them up. Without that color, you'd have to label the cheese or taste it before use.