The two Great Commandments are not an evolution as you call it they are a summary of the Ten Commandments.
If you do not regard the Ten Commandments to be absolutely binding upon Catholics why you does the Catholic Church continue to teach that keeping these Commandments is absolutely essential for salvation. The Catechism of the Catholic Church devotes an article to each of the Ten Commandments and you say that the Commandments are not part of the Church’s doctrine or dogma! That assertion is absolutely beyond belief.