There are still Catholic colleges that hold very strict expectations with regards to adhering to Catholic Church teaching. Some of the colleges on this list, such as Thomas Aquinas, Franciscan University, and Ave Maria, come to mind: https://newmansociety.org/college/
Franciscan University recently banned a book that portrays the Virgin Mary as sexual – and fired a department chair for teaching it.
Also, I don’t get people getting worked up over the “Catholic” vs. “Christian” terminology distinction. Catholic schools refer to themselves as “Catholic” (not “Christian”) and if someone was looking for a 'Catholic" school they would use the term 'Catholic" school (ditto Protestant institutions that use the term “Christian”).