BEANS: Combine the broth, oregano, salt, cannellini, hominy, and chickpeas in a large pot. Cover and bring to a boil over high heat, reduce to simmer and cook until needed. VEGETABLES: Add the peppers, onion and garlic to a food processor. Pulse until minced. Heat the oil in a large pot over high heat. Add the minced vegetables and cumin and cook until the mixture is dry, about 8 minutes, stirring often. Add the broth and beans to the sauteed vegetables and simmer until the flavors combine, about 5 minutes. Add the spinach and cook until tender. Taste and adjust seasoning with salt and black pepper. Stir in the lime juice and cilantro. Serve with avocado, if using.