There is a “hierarchy of truths” one must accept to be classified or considered a “Christian”.  Some faiths, Baptists, Catholics, Protestants, Lutherans, Presbyterians and more are considered Christian.  Others such as Muslim, Jehovah Witness, Mormon and others are not.  So what is this “hierarchy of truths”? 

As referred by author Alan Schrek in his book “Catholic and Christian – An Explanation of Commonly Misunderstood Catholic Beliefs” defines it the following way.

(Will post here)

The Christian Research Institute had the following to say:

Even the Protestant Reformers themselves clearly acknowledged that Catholicism as a system affirmed the basic articles of the historic Christian faith. The Reformers simply charged that in both belief and practice the medieval Catholic Church compromised its formal adherence to orthodoxy — specifically as related to its obscuring and undermining the gospel message.