Place the cream cheese into a food processor and pulse until lightly whipped. Add shredded cheeses, mayonnaise, Worcestershire sauce, dry mustard, onion powder, garlic powder, and paprika, and pulse until well mixed. Add the diced pimento and pulse one or two times only.

Remove the mixture from food processor bowl and place into a mixing bowl. Stir in minced celery leaves. Place into a serving bowl and serve with crackers and/or celery.