Red, White and Blue Cheesecake Cake

Name: Red, White and Blue Cheesecake Cake
Prep time: 1 h
Cook time: 1 h 15 min
Total time: 2 h 15 min
Cuisine: American
Ingredients: Two 8-ounce packages cream cheese, (at room temperature); 2/3 cup granulated white sugar; pinch of salt; 2 large eggs; 1/3 cup sour cream; 1/3 cup heavy whipping cream; 1 teaspoon vanilla extract; 2 cups all purpose flour; 1 tablespoon baking powder; 1/2 teaspoon salt; 1½ cups granulated white sugar; 1/2 cup (1 stick) unsalted butter, (at room temperature); 3 large eggs, (at room temperature); 1 cup whole milk; concentrated gel paste- classic red and royal blue ((see tips in Recipe Notes below)); 4 ounces cream cheese, (at room temperature); 5 cups powdered sugar; 1/4 teaspoon salt; 3 to 4 tablespoons whole milk; 1/2 teaspoon vanilla extract; sprinkles, (optional)