The idea that even the Son is a created being is the ancient view called Arianism, which did not prevail at the Council of Nicea. Every Sunday morning at St. Philomena's we would stand up and affirm the following:
We believe in one Lord, Jesus Christ,
The only Son of God,
Eternally begotten of the Father,
God from God, Light from Light,
True God from true God,
Begotten, not made,
One in being with the Father.
Every major Protestant branch is also derived from the Athanasians who prevailed at Nicea.
There are lesser sects such as the JWs and Mormons who steer the other way.