Melt butter in a medium saucepan over medium heat. Whisk in flour and cook for 3 minutes. Whisk in the half-and-half, stirring frequently until thick, about 5 minutes.Stir in black pepper cheese, keep stirring until melted. Add shredded cheeses and stir until melted. Add hot sauce and check for seasoning.Keep on very low heat until ready to serve. Serve with tortilla chips, chopped tomatoes, cilantro, and pickled jalapeños.