White Cornbread is the savory crunchy type while Yellow Cornbread is the one that tastes like cake. Yellow Cornbread is also the one that was always served in school lunch rooms. If you are going to make Mexican Cornbread, or work it with Chili, I prefer the Yellow. For all Southern dishes, I like White Cornbread, made like Mom makes it in a cast iron frying pan with bacon grease.
BTW, if you are diabetic, you can get away with eating fried foods and other Southern dishes by drowning it in pepper vinegar sauce. Vinegar stops the blood from absorbing the sugar/carbs. Adding a touch of Cayenne powder (not even enough to taste) will achieve the same purpose with many other foods, especially breads, if you are baking.