CMU isn’t as well known as the others. The OP may have thought it stood for Central Michigan University. Nope, it stands for Carnegie Mellon University, #1 in computer science and also #1 in Pittsburgh vibes :)
Fun fact, the bookstore wasn't allowed to make shirts that said CMU for some time because Central Michigan University had a problem with that. Eventually they came to an arrangement and now you can buy CMU shirts at Carnegie Mellon.