I've never heard of 4 of those, but out of the others the only ones I remember as not being deadly boring, or just crap, or unappealing for long forgotten reasons are On the Road & the Doors of Perception. The I Ching isn't really a book in the conventional sense & I did have a brief flirtation with it, though that was after becoming a premie. I asked it how my relationship with the Greatest Incarnation would pan out & got 'success at the beginning, failure at the end' which wasn't what I wanted to hear at the time & put me off going further with it.

Funnily enough that turned out to be the correct prediction.

The book whose timing in my life was unfortunate in retrospect was The Perennial Philosophy which I came across a couple of months before I heard of Divine Light Mission towards the end of 1971.

It gave me something intellectually plausible as back up to the irrational non-explanations from the premies as to what the nollidge was all about.

A reinforcement of the bullshit.

The other books much read by hippies as I remember  were Tolkien's Hobbit stories; & there's something.

Vague recollections are that those most enamoured of The Lord of the Rings rarely became premies & regarded Divine Light Mission as a modern reincarnation of nazidom. Which in many ways it was.

Bhole Shri Sieg Heil.