I find it difficult to mention any authors that directly remind me of Auster. I think that's a good thing. I purposely look for it in books, and hope to find it, but on the other hand, I really enjoy Bob Dylan's music, and rarely like the works of those who copy or mimic him.
That said, I find that the great J.M. Coetzee has some Austerian touches from time to time. By that I mean, that fans of Austers work, will probably enjoy the book "Slow Man". They may also like "Waiting For The Barbarians" and "Disgrace". I rate all 3 books very highly.