If you check the books in the Tokyo-F section, it's really mostly stuff about the city and the production that was listed in the doorstopper 'Newbie's Guide'. Some of these seem less like straight up factual books and more like someone's handwritten notes, like what was learnt in the recent adventure in Heaven ('There's a fountain that can cleanse corruptions, holy shit').

Another notable one is about a host called 'NafunAI' which also has more speculation ('Works for Bel? May be on loan to the Production?') as well as straight up mentioning that she was supposed to handle his transfer off the show ('Is it specific to just her by virtue of her role?')

...There are subsections for units and various unit members. Though it seems that he only lists down information for people he actually kind of knows.