There are various ways to order/group books in a library.
- By author, in alphabetical order
- By size
- By category etc.
Concerning 3) we might have the following names in Latin. They might be opera...
and of course all kinds of conceivable subcategories.
But what about
- do-it-yourself / handicraft guides
- travel guides (itinerarium might be a good candidate, but would e.g. Lonely Planet count as one? According to this entry it is an account, not an exhaustive guide of useful travel information)
- belles-lettres, "a label for literary works that do not fall into the major categories such as fiction, poetry, or drama" (quote from Wikipedia).
- comic books (Asterix Gallus et al.) [Edit: I just thought of delineata, analogous to the way map publishers like Blaeu would mention the people who drew the map: "X delineavit"]