It's funny how different areas have different common names though. I can't recall ever having a Rosco, maybe one Rocky. The others are moderately common for us. Our super common names (as in these names are always followed by the first letter of their last name because we have so many) are Riley, Bailey, and Lily. Mia, Tucker, Charlie, and Luna are also pretty common.
I was actually really surprised we didn't get a big influx of Frozen names. We've only had one, a maltese named Olaf.
Coco is a pet peeve of mine, along with similar color themed names (Midnight, Shadow). We have two chocolate labs right now named Coco.
I feel like all of our Boston Terriers have strange names. Pickles, Blueberry, Lady Stanley, and Freddy (which wouldn't be weird if she was male). That said I don't always mind food names, Pickles actually works really well for the Boston. We have a pug named meatball and that's also a good fit.