This Wikipedia article contradicts itself, because Kraft Singles don’t even qualify as American Cheese due to them not containing actual cheese (which it says in the article). Actual American cheese is just as flavorful as whatever cheese it’s made from.

The sodium citrate trick is really useful for recipes containing cheese. You can make sodium citrate from lemon juice and baking soda, melt a chunk of cheddar or colby with it and you have instant queso