Related topics The X FactorCarly Rose SonenclarDiamond WhiteArin Ray Advertisement Tuesday night’s episode of “The X Factor” revealed the 16 finalists that will perform in the live shows, which are scheduled to begin on Nov. 1. Four contestants advanced from each of the show’s four categories—“teens,” “groups,” “over 25” and “young adults”—and were guided by one of the four celebrity judges and a guest mentor. Simon Cowell and Latin singer Marc Anthony took on the “groups” performers, while Demi Lovato and fellow Disney creation Nick Jonas sifted through the “young adult” singers. L.A. Reid tackled—albeit begrudgingly—the “over 25” contestants with the help of Justin Bieber and Britney...