Hi Dave,
Tend you use what is on hand.For a split pea/ham soup get a almost bare hame bone.Simmer then remove and cut the rest of the meat away.Save for later.Render the stock(reduce) then add veggies(split peas),then simmer and then the ham bits and serve,....
Chicken,cook a roaster and then add the remains,half an onion,a few stalks of celery and a carrot,always save the stock and freeze it as it can be used for another round of soup!
Beef stock? I am not telling!