Mix cream cheese, sour cream, mayo, chili and garlic powder, lime zest, and juice in a bowl until smooth.

Stir in corn, cheese, and cilantro. Add salt and pepper.

Pour mixture into a greased 2-quart slow cooker and spread evenly.

Cook on low for 2–3 hours, stirring once midway.

Turn to warm for serving if needed and sprinkle extra cilantro or cheese.