You may want to explore PPE programs. Here’s one at UPenn, since that school is already on your list: https://ppe.sas.upenn.edu/
Claremont McKenna has been mentioned, and they have an excellent, seminar-based PPE major Philosophy, Politics and Economics (PPE) - Claremont McKenna College - Acalog ACMS™ Also in the Claremont Consortium, PPE majors are available at Pomona Philosophy, Politics and Economics Program | Pomona College in Claremont, California - Pomona College , and at Pitzer and Scripps The Scripps Experience: The Off–Campus Major | Scripps College in Claremont, California as an off-campus major. The 5C’s have a joint student newspaper which is top-notch and has launched many student reporters into journalism careers. (French and other foreign languages are also very strong.)
Other interdisciplinary PP/PPE/PPEL programs to check out:
https://denison.edu/academics/philosophy-politics-economics
https://artsandsciences.osu.edu/academics/programs/majors/philosophy-politics-and-economics-ba
https://catalogue.usc.edu/preview_program.php?catoid=11&poid=12438&
https://moralscience.arizona.edu/ba-philosophy-politics-economics-and-law