Bill, sadly Phil Ochs ended his life far too early. I doubt whether he would ever have achieved the volume or the range of Dylan's work. I admit freely it is a shame we will never know. I tend more to take the view of LH on this one.
I don't know enough of Harry Chapin's work, but if you are only half right, it will be well worth my while checking him out. Personally, I think Dylan was a revolutionary and unique songwriter in terms of range, depth and technique. Still, I will happily concede that my ignorance of anyone better does not prove that they don't exist. The fact that I do not personally rate Ochs as highly does not obscure the fact that I still appreciate that he was very, very good.