In a large mixing bowl, combine corn kernels, diced red bell pepper, finely chopped red onion, shredded cheddar cheese, and sliced green onions. Stir gently until evenly distributed.

In a separate bowl, whisk together mayonnaise, sour cream, apple cider vinegar, and lime juice. Add salt and pepper to taste, and whisk until smooth and creamy.

Pour the creamy dressing over the corn mixture and gently fold until well-coated without mashing the ingredients.

Cover the bowl with plastic wrap or transfer to an airtight container, and refrigerate for at least 30 minutes to meld flavors.

After chilling, gently stir the salad and serve it chilled, optionally garnished with additional green onions or cheese.