Desdemona, saints were not 'canonzied' in those days and are still not 'canonized' in the Eastern Church. Saints are saints if people spontaneously venerate them. The Eastern Church, as the early Church did, follows that practice. There is no formal 'beatification' based on innovations of the Latin side and unkown to the genuine Church.
This is why the Church cannot unite with papal primacy as it is understood in thre West. The Orthodox cannot allow some nut, sitting on the throne in the Vatican, not obligated to anyone, to make such decisions.
Stepinac?