One interesting collection of science fiction short stories from the early seventies is "Moderan" by David R. Bunch. After many years out of print, it was recently re-published in the NYRB Classics series: https://www.goodreads.com/book/show/38732324-moderan Very surreal—and sometimes disturbing—tales about cyborgs trying to leave their humanity behind.

Another masterful writer of surreal science fiction stories was R. A. Lafferty https://www.amazon.com/Best-R-Lafferty/dp/1473213444/