They cluster.
There were several NY articles written during the 1990s and 2000s of how the homosexuals would find themselves at outfits like the NY Times. As they were in the closet they were adept at keeping undercover and keeping secrets.
As one by one ascended within the organization they eventually took over and hired mostly homosexuals.
People from India do the same thing in medical residency hospitals. And there are other example how certain groups flock together and keep everything to themselves.
Mexicans have been doing that since as long as I have lived, it is how they take over occupations in America, so completely.