Heat a large skillet over high heat and char the corn kernels in batches until they have golden brown spots, about 5-6 minutes per batch.
In a large bowl, beat together cream cheese, mayonnaise, and sour cream until smooth and creamy.
Add the charred corn, Mexican blend cheese, half of the cotija cheese, jalapeƱos, garlic, chili powder, and smoked paprika to the bowl and mix well.
Transfer the mixture to a greased slow cooker and spread evenly.
Cover and cook on low for 2 hours, stirring once halfway through, until hot and bubbly.
Before serving, stir in the cilantro and lime juice, then top with the remaining cotija cheese and serve with tortilla chips.