Cook the coriander seeds and the cumin seeds in a large Dutch oven over medium heat 1 minute or until toasted and fragrant. Place the toasted spices, cloves, and cinnamon in a spice or coffee grinder; process until finely ground.
Combine 2 teaspoons cinnamon mixture, rice, grated onion, 1/2 teaspoon salt, beef, egg white, and garlic in a large bowl; set remaining cinnamon mixture aside. Shape beef mixture into 24 (1-inch) meatballs.
Heat pan over medium heat. Coat pan with cooking spray. Add cabbage, chopped onion, carrot, and celery to pan; cook 8 minutes, stirring frequently. Add remaining cinnamon mixture, chili powder, and chipotle; cook 1 minute, stirring constantly. Stir in 1/4 teaspoon salt, broth, and tomatoes; bring to a boil. Reduce heat to simmer. Add meatballs; cover and cook 15 minutes. Add potato; cook, uncovered, over medium heat 20 minutes or until potato is tender.
In Mexico, albóndigas (meatballs) are sometimes made with rice used as the binding agent. Other times, rice is in the soup.