The Ethiopians have 35 books in their New Testament (the eight books of the Apostolic Constitutions) and two more books in the OT (Book of Jubilees and that of Enoch).
The Assyrians have only 22 books in their New Testament. The Celts used to regard the Shepherd of Hermas and the Apostles Creed as New Testament books. Clement’s First Epistle was often read as part of NT scripture as well.
Fourth Maccabees is not part of the Canon of the Orthodox OT but is sometimes included in Greek editions for inspirational reading.
Alex