Is there a current lubavitch list? May have gotten much worse in recent years.
Not public anymore that I can find, but I asked the owner of
ChabadMatch.com, which is a list accessible by Shadchanim. Singles have to pay a $25 one time membership fee to be listed.
He said they currently have 3,100 Chabad singles, with about a 55-45 ratio of girls to boys.
Yesterday, the 700th single found their bashert via his site since its inception.
I asked about his theory for the ratio and he said, "There are more chassidish girls than chassidish guys, so they are often inundated with suggestions, making them sometimes less likely to register."