That’s the impression I have, too. CMU overall seems more nerdy/geeky and STEM-focused. Brown graduates would be more likely to be politicians or be in public office. They’re more social and closer to stereotypically normal people in social behavior and norms, while CMU is more similar to MIT due to its previous title as an “institute of technology”, but not as nerdy/geeky in STEM because of its drama and business and art programs. It’s in between Brown and MIT on that scale. Brown gives off warm and cozy liberal arts and Ivy university vibes, but CMU doesn’t. CMU does have multi-talented people with interdisciplinary interests though, but it’s not really a “liberal arts” university with super warm and cozy vibes, so it’s closer to MIT in that area.