I recently read Pierre Garnier's C'Est la vie and Tioachino Criaco's Black Souls, both of which are unusual takes on noir tropes. Black Souls is less like a novel than an epic, delineating the history of a crime family in central Italy in the voice of their leader, as he rises from shepherd to crime boss and then crashes in an epic sacrifice that fades out in a cloud of mythic proportions. It's a compelling read, but without a central thread of plot, other than a string of incidents along the thread of the hero's life.
C'Est la Vie on the other hand begins as a traditional novel, in the voice of a writer who is dissatisfied with his life despite having finally had success with his new novel. The intricate plot revolves around his son, one of his former wives, his current (much younger) wife, leading toward (like Black Souls) a final conflagration that achieves a surrealist, dreamlike version of noir in which the hero retreatsf rom life (almost) into a trapped-in mental state he maintains seemingly by force of his will.
Both these books are fascinating, and both defy the expectations of readers: adventurous crime fiction readers should take a break from conventional fiction and have a look.