In a mixing bowl, combine the grated sharp cheddar cheese and softened cream cheese.
Add the mayonnaise and mix until smooth.
Stir in the diced pimentos, ensuring they are evenly distributed.
Add garlic powder, onion powder, and cayenne pepper for flavor.
Season with salt and black pepper to taste.
Mix all ingredients thoroughly until well combined.
Taste and adjust seasoning if necessary.
Transfer the mixture to a serving bowl.
Cover and refrigerate for at least 1 hour.
Garnish with fresh herbs before serving.