Articles of Faith can be classified in 2 ways:
(A) Traditional (6 articles: God, Holy Books, Messengers, Angels, Day of Judgement, Predestination) &
(B) Comprehensive (two types): (i) Existence & Attributes of God & (ii) all He revealed in Holy books, as cited in Quran "God & His Words" (7:158).
This method is all-inclusive as it includes many items not included in traditional classification such as death, Kaaba, Jinns etc.