With respect to the study of Mandarin, IPEDs will offer you a sense of the popularity of this program across various colleges. For example, Hamilton (at 9 graduating Chinese Language and Literature “first majors” in a recent year) and Middlebury (at 8) appear to set the standard for LACs:
https://nces.ed.gov/collegenavigator/?q=Hamilton&s=all&id=191515#programs
https://nces.ed.gov/collegenavigator/?q=Middlebury&s=all&id=230959#programs