I think there are any number of lists that would help getting started. The basic results are "multiple perspectives" and the sense that not all perspectives are equally powerful for given contexts. That list was for adult "business people". One would come up with other lists for children, etc.

An important idea about reading is that part of the pleasure (maybe even more than that) is one's choice of "this book, now". I had read many hundreds of books a year by the time I got to high school, but I balked at reading books chosen for me in a class. I suggested instead that the classes deal with themes and that there should be several thousand good books in the library that students could choose for themselves. This would make the discussions of the themes quite interesting, etc. But no go, so I wound up -- for their chosen books only -- reading "Classic Comics" like most of the rest of the students (I did get around to reading the "chosen books" later in life.)

The approach of lots of books and themes was used by Mortimer Adler in putting together "The Great Books of the Western World" (now 60 of them). https://en.wikipedia.org/wiki/Great_Books_of_the_Western_Wor... Besides these books he picked 102 "Great Ideas", wrote an essay on each one, cross indexed the ideas through the "Great Books", and published the essays as the two volume "Syntopicon".

In this sense, the reading list I came up with for Anderson Consulting was too short -- it wasn't a decent library size. And this is true of the "Great Books": it's too short as well.

Another idea is the "Oxbridge" approach: pick "4" important as orthogonal as possible large subjects, and go deep on them until they meet in "the good stuff".

Simplest heuristic: read a lot.