OK then, name the non-reformed theologians of historical relevance.
St. Ambrose of Milan
St. Augustine of Hippo
St. Jerome
St. Thomas Aquinas
St. John Chrysostom
St. Basil the Great
St. Gregory of Nazianzus
St. Athanasius of Alexandria
St. Bonaventure
St. Anselm of Canterbury
St. Isidore of Seville
St. Peter Chrysologus
St. Leo the Great
St. Peter Damian
St. Bernard of Clairvaux