In a large mixing bowl, combine the cole slaw mix, sweet corn, minced jalapeño, chopped cilantro, and sliced green onions. Toss gently but thoroughly until all ingredients are evenly mixed.

In a separate small bowl, whisk together the mayonnaise, freshly squeezed lime juice, sugar, garlic powder, salt, and pepper until smooth and creamy.

Drizzle the prepared dressing over the slaw mixture and fold gently using a spatula to combine. Ensure each piece is well-coated.

Cover tightly and refrigerate for at least 30 minutes to allow flavors to meld.