Who decided what books wouldn be included in the Bible and what criteria did they use to select the books that stayed?”
Your question is asking for definitions to start with as there are many, many versions of ’The Bible’. The choice of texts found in documents that fit in any edition of ’the Bible’ depends of worldview and of knowledge of researchers. The ‘Book of Revelations’ belongs to the New Testament and is the most difficult book of any Christian bible. It contains historical data that have to do with history-as-such. I cannot give you an answer to your question about ’the vision of some woman’ and the words ’many years later’, as time is a relative concept and the definition of when what text was written is has become now a consistent search thanks to very refined technology available for text-analysis. The text of the ‘Book of Revelations’ is traditionally ascribed to Saint John who is said to have written it on the Isle of Tassos in the Aegean Sea. I advice you to be careful with the reading and interpretation of this work as it contains many linguistic forms. You will find a lot of metaphors