The Book is also not canon. For example, according to the books Minsc was a redhead rando from Athkatla and Jaheira was dead.
Many people think the book is canon because of the Abdel Adrian name, but quite a lot of things actually contradicts the books. Luckily.
What is Canon for BG3? BG2 happened, somehow. Minsc is alive and Jaheira is alive. That we know.
If they use the comics as canon, then Neera existed and Coran knows Minsc.
Thats it. There is no oficial canon outside from the campaign settings. Every supplementary book can be part of your tables canon, but be unconanical somewhere else. We are soon sitting on Larians table, but we do not yet have a full picture what is canon there.
