Phi Beta is a professional GLO that incorporates all creative & performing arts, and comm is included in that! (Anything from the study of communicative disorders to film making). Our Alpha Epsilon chapter at the University of Houston is almost entirely comm majors! We were originally founded as a fraternity uniting music & speech.
I checked out the
PFA website & found
Pi Sigma Epsilon, which is a sales & marketing GLO. That was the closest thing I found aside from Phi Beta.