Caffè Latte and Guillermo are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Caffè Latte and Guillermo's differentiating factor?In following section we will take a close look at what is Caffè Latte and Guillermo color, serving style, types and much more. First thing to know is what are the different types of Caffè Latte and Guillermo. Well, Caffè Latte types include galão, Café au lait, Café con leche while types of Guillermo are Espresso.