If using fresh corn, grill or sauté the corn for 5-7 minutes until charred. Let cool.

Chop cucumbers into half-moons, and dice the red bell pepper and red onion. Chop cilantro.

Whisk together mayonnaise and sour cream (or Greek yogurt) with lime juice, chili powder, smoked paprika, salt, and pepper until smooth.

In a large bowl, combine cooled corn, cucumbers, bell pepper, red onion, and cilantro. Fold together gently.

Drizzle the dressing over the salad, and toss until coated. Add cotija cheese and fold gently before serving.