Cook or bake the turkey ahead of time. Remove skin and bones, then shred the meat into small pieces.
In a large bowl, combine shredded turkey, cream cheese, mayonnaise, Ranch dressing, Worcestershire sauce, hot sauce, garlic, and half of the cheddar cheese. Mix until smooth and creamy.
Spread the mixture evenly into a 7×11-inch baking dish. Bake in a preheated oven at 370°F for 25 minutes.
Remove from the oven, sprinkle the remaining cheddar cheese on top, and return to the oven for another 10–15 minutes, until the cheese is melted and golden.
Let cool slightly. Top with chopped green onions and blue cheese crumbles if desired. Serve with tortilla chips, carrot sticks, celery, or cucumber slices.