After cutting the mass market paperback and graphic novel/manga lists in 2017, the Times‘ Best Sellers team will again track mass market paperback sales, as well as debut a combined list for graphic books, which will include fiction, nonfiction, children’s, adults, and manga. Two new monthly children’s lists, middle grade paperback and young adult paperback, will debut as well. (The Times retired its middle grade e-book and young adult e-book lists in 2017.) In addition, the Times will cut its science and sports lists, explaining that “the titles on those lists are frequently represented on current nonfiction lists.” – Publishers Weekly