Southwest Sweet Potato Chowder

Name: Southwest Sweet Potato Chowder
Ingredients: 4 extra-large sweet potatoes; 15 oz. can black beans (rinsed and drained); 16 oz. bag frozen corn (or a 15-oz. can whole kernel corn); 1 medium onion (diced); 1 red pepper (diced); 4-5 slices serrano pepper (seeds removed); 1 large clove garlic (minced ); 2 tsp. chili powder; 1 tsp. cumin; 8 oz. pkg. cream cheese (or Kefir yogurt cheese); 1 tsp. salt; 1/2 tsp. ground black pepper (or more to taste); 1/4 cup fresh cilantro (chopped); 1/2 to 1 cup Cheddar or Monterey Jack cheese (shredded, as garnish); 1 tsp. fresh cilantro (as garnish); 1/2 gallon coconut milk, whipping cream or half-and-half (or any combination of the three)