Hey dreamcetcher,
I have only read 3 of the books you’ve mentioned, plus started on one that I haven’t finished, but still I’ll try my best to give you a few recommendations:
I think you should try out Haruki Murakami. And the best way, in my opinion to know what he is all about, would be to start on his remarkable short story collection “The Elephant Vanishes”. I would describe it (them) as surreal. I personally don’t think you’ll regret. You can read “The Second Bakery Attack” (one of the short stories) here and see if it’s something for you:
http://ctina.com/bakeryattack.html
Maybe you should try Sarah Kane too. She is a playwright. Pick one of her plays; you’ll get through it within a few minutes, so no loss of time.
She doesn’t write about pretty things, to put it mildly, but rather… I don’t know… ugly sides of humanity? This description would only be fit for her first 3 plays however; “Blasted”, “Phaedra’s Love” and “Cleansed”.
“Crave” is a little out of the ordinary, here you meet 4 people: A, B, C and D, related to one another. It’s pretty much a “conversation” between them. Not sure if conversation is the right word though, since it seems as though they are talking to themselves rather than each other. I found it to be quite interesting.
“4:48 Psychosis”, Kane finished up writing a short while before committing suicide, so it’s very disturbing, because it’s as though you’re witnessing the whole “process”.
Anyways, I have only read two by Saramago, but I’m thinking he might be something for you. A little difficult writing style, but you get used to it eventually. “Blindness” by him is pretty “famous” around here.
And try “The Stranger” by Albert Camus. I started on “The Plague” by him, but haven’t got the chance to finish it yet, he makes dull things interesting to read, if you get what I mean? At least that was the case with the latter.
Hope this helped you out a little. There’s a huge chance you might not like any of these, so keep in mind that they’re just a few suggestions of books I like.
Good luck with your reading!