In a large stockpot bring the stock/broth, reserving one cup, to a simmer. Over medium heat, add 2 tablespoons of oil in a skillet. Add onion and garlic. Cook until onions are translucent. Add the green chilies, cooking for about 2 minutes more. Add onion/chili mixture to the stockpot. In a bowl whisk together the reserved stock; taco seasoning and dry ranch mix until there are no lumps. Stir into stockpot. Add can of Rotel and Ranch style beans, juices and all, to stockpot. Simmer for 20 to 25 minutes. Add Corn, green beans, cilantro and chicken meat. Simmer additional 10 minutes. Crunch up tortilla chips and place handful in soup bowl, top with as much cheese as you like (I like a handful) then ladle hot soup onto chips and cheese. Mix & enjoy! You will find that you have two completely different soups with and without the cheese and chips. They are both Yummy.