Wow, this guide looks really interesting and groups the books into sagas well. However, I don't know if it mentions the specific chronology of the books in relation to the games. I'll check this part by asking this subreddit with each new Halo book purchase I make. But thank you, this guide will be an excellent reference to analyze which book sagas are the most interesting for me to buy.
it's not intended to be a be all, end all, but there's definitely some useful info there for ya.
We also spent a lot of time on it so i love sharing it with people checking out the books. :)