Are Catholics, Jews, Mormons considered Christians?

As far as I understand, A Christian are those that believe in the teaching of Christ (Jesus) . They believe in the life , creed and the teachings of Christ. Some Christians believe that Christ was God. Because of his sayings in the 4 conical Gospels. His death by Crucifixion and resurrection from the dead as part of what Christianity is. So jews do not believe in Christ that way so they are not Christians nor are Muslims, Hindus, or Buddhists.