Within days of one other, the annual lists of the top tomes worth reading this year began flooding the Web. The Gray Lady made her majestic picks. So did editors at NPR, Amazon and Goodreads. Some names will be familiar to lovers of literature — Lorrie Moore, Colm Toibin and Richard Ford, among them. But Chinese-American novelist Celeste Ng, who snagged Amazon’s book of the year, may be the most-acclaimed writer you’ve never heard of.