The sociopathic priest theory is possible, but why so many years apart with different types of victims?
Some of the priest pedophiles were moved around a lot. To other parishes in the Twin Cities or Cold Spring, and sometimes to the Bahamas, were they have a parish they serve also. Some priests were sent to St. Luke's in NY, which was supposedly a place for them to be "fixed" or rehabilitated. So they could have been offending wherever they were stationed.