See my post #14.
I don’t doubt that women sing Gregorian chant in modern times, but originally (back when it was a hit), it was just males.
You completely missed the point I made by emphasizing the words "traditionally sung ... by women ... of religious orders". The Order of St. Benedict, which consists of monks (men) and nuns (women) has been around for many centuries. It was founded by St. Benedict, who died in approximately the year 547.
So, if Benedictine nuns have been praying the Divine Office and the Mass by chanting the texts since around, let's say, 600 A.D., then that would seem to include back when Gregorian chant was a hit and way before modern times, no?