Using pen names has been a common practice for, well, a very long time. George Eliot is a nom de plume, as are George Orwell and George Sand. Though not a George, journalist Sarah Hall chose to publish her fiction under a different name. She writes for The Guardian about this decision, the history of the pen name, and the reasons authors continue to use them.
What did we read in the Obama era? Christian Lorentzen has some answers. Apart from individual books like The Flamethrowers and The Art of Fielding, he comes up with some genres that have dominated the past eight years, including autofiction, works of trauma and fables of meritocracy. (You can probably guess where Leaving the Atocha Station ends up.)