Snapshot: New series Week 2: ABC's Notorious (1.1 in 18-49, down 0.1 from fast national, even with final), Fox's Pitch (1.1, down 0.1); Returning series all down, with the exception of ABC’s Grey’s Anatomy (2.4, even with its premiere fast national) and Fox’s Rosewood (0.8, up +0.1); Chicago Med (1.3) hits new series low; Grey's Anatomy (2.4, 8.34 million viewers) is night’s highest-rated and most-watched program. Rookies Notorious and Pitch and sophomore Rosewood got…