Why do the rankings from U.S. News & World Report list some schools twice?
If you click on a school's name, you can see the rankings of its various departments, including both Statistics and Biostatistics if applicable (example). This is pretty inconvenient, as it requires going through the schools one-by-one, but I'm not sure there's a better way to get that information.

There is also a post on gradcafe separating the rankings, though I'm not sure if it includes the entire list.