Chances at Engineering Schools - Unique Extracurriculars/Circumstances, Good GPA and Recs

All three universities offer majors in Chemical Engineering. In addition, Cornell’s Biomedical Engineering Concentration, JHU’s Cellular and Molecular Bioengineering Track, and CMU’s Designated Biomedical Engineering Minor for Carnegie Institute of Technology students all appeal to me. Bio(medical) Engineering (for my specific interests) is very suited to Chemical Engineering, and all three universities agree. Why else would these specific subprograms be offered in the departments I am interested in?