1. Preheat oven to 375°.
2. Weigh or lightly spoon cornmeal, white rice flour, and brown rice flour into dry measuring cups; level with a knife. Combine cornmeal, white rice flour, brown rice flour, tapioca flour, and the next 7 ingredients (through chipotle chile pepper) in a medium bowl; stir with a whisk. Make a well in center of mixture. Combine buttermilk and next 4 ingredients (through eggs); stir with a whisk. Add to flour mixture, stirring just until moist. Stir in cheese, corn, and jalapeño pepper.
3. Place 15 paper muffin cup liners in muffin cups; coat heavily with cooking spray. Spoon batter into prepared cups. Bake at 375° for 20 minutes or until muffins spring back when lightly touched. Cool 10 minutes in pans on a wire rack; remove from pans.
Flavor Swaps: Sub aged white cheddar for the sharp cheddar, and minced green onion for the jalapeño.