Bring rice, barley, cranberries, water and pomegranate juice to boil in 4-quart saucepan. Reduce heat to medium-low; cover and simmer 1 1/2 hours to 1 hour and 45 minutes or until desired creamy consistency is reached, stirring occasionally.
Meanwhile, mix all of the spices in small bowl. Divide spice mixture in half. Set aside.
Melt 6 tablespoon of the butter in small skillet on medium heat. Add almonds, pepitas, coconut and half of the spice mixture; cook and stir until fragrant and golden brown, about 3 to 5 minutes. Set aside.
Stir remaining spice mixture and 6 tablespoon butter into the cooked rice congee.
To serve, spoon congee into serving bowls. Top each with the toasted coconut-nut mixture, mango and yogurt. Drizzle with pomegranate molasses.