Pumpkin Bread French Toast

Name: Pumpkin Bread French Toast
Ingredients: Nonstick cooking spray; 1 cup granulated sugar; 1/2 cup lightly packed brown sugar; 2 teaspoons pumpkin pie spice; 1 cup canned pumpkin puree; 1/2 cup vegetable oil; 2 large eggs, at room temperature, lightly beaten; 1 3/4 cup all-purpose flour (see Cook's Note); 1 teaspoon baking soda; 1 teaspoon kosher salt; 1/2 teaspoon baking powder; 8 ounces cream cheese, at room temperature; 1 cup confectioners' sugar; 1/2 cup heavy cream; 1 teaspoon orange zest; 1 teaspoon pure vanilla extract; 4 tablespoons unsalted butter; Confectioners' sugar, for dusting; 4 candy pumpkins