Filioque Explained
Yes, Catholics are indeed Christian since the Church teaches the fullness of the Christian faith. So a person who professes the true faith and denies themself, carries their cross daily, and follows Christ (Lk. 9:23) is the most authentic and great Christian. If you are interested in knowing if non-Catholics are Christian, read my article on that (https://www.catholic365.com/article/49178/are-non-catholics-christian.html).