Slow Cooker Leftover Turkey Corn Chowder

Name: Slow Cooker Leftover Turkey Corn Chowder
Ingredients: 3 cups chopped leftover turkey; 3 cups diced russet potatoes ((peeled)); 2 cups frozen corn ((or, canned/drained)); 1 cup frozen chopped onion; 4 cups chicken or turkey broth; 1 teaspoon smoked paprika; 1 teaspoon dried thyme leaves; ½ teaspoon garlic powder; ½ teaspoon onion powder; 1 teaspoon kosher salt ((plus extra to taste)); ½ teaspoon ground black pepper ((plus extra to taste)); 1 cup heavy cream ((room temperature)); ½ cup sour cream