Corn and Green Chile Chowder

Name: Corn and Green Chile Chowder
Ingredients: 4 tablespoons (1/2 stick) butter; 3 slices bacon, chopped; 1 onion, sliced; 1 tablespoon chopped fresh oregano; Two 7-ounce cans chopped green chiles; 5 ears corn, kernels sliced off (2 1/2 to 3 cups); 2 cloves garlic, minced; 3 1/3 cups chicken stock or broth; 2 tablespoons cornstarch; 1 1/2 cups heavy cream; 1 heaping cup grated Monterey Jack; 1 heaping cup grated pepper jack; Kosher salt and freshly ground black pepper; 1/3 cup sliced green onions