Chuck Palahniuk is a well - known novelist of transgressional fiction. His works often explore dark and subversive themes. For example, 'Fight Club' challenges consumer culture and traditional notions of masculinity in a very bold way.
Bret Easton Ellis is another. His novels, like 'American Psycho', push the boundaries with its disturbing and controversial content that delves into themes of excess, violence, and the shallowness of modern society.
Irvine Welsh is also considered one. His book 'Trainspotting' is a prime example of transgressional fiction. It vividly portrays the gritty and often immoral lives of drug addicts in Scotland, not shying away from showing the raw and unfiltered reality.