What section of my collection should i put shakespeare’s work?

Ok, doesn’t really fit into the “is it normal” type question, but I had no other format to ask this in. This is the basic idea:

I’m writing a book series and it also has its own mythology. I’ve gathered a collection of books, one for the main book series, which consists of a lot of popular franchises, and another consisting of religious and mythological text for inspiration on the world’s mythology that I created. I’m considering adding the works of Shakespeare to my collection, but I’m not sure which section they better belong in.