Honestly, the whole thing becomes a LOT more intriguing when you start adding back in the non-canon books. And I can totally see why the church deemed them heretical in a lot of cases, they pretty well fly in the face of a powerful centralized church, and if you’re in power, seeking to maintain it, it only makes sense to destroy them.
Every denomination has a different Bible, with different books they consider Canon. For instance, the Ethiopian Orthodox Tewahedo church has a staggering 81 books. They consider the book of Enoch canon, which almost every other denomination considers apocryphal. Interestingly, the book of Enoch corroborates a lot of information from other apocryphal texts, such as the origin of nephilim.