Yeah I mean my experience in Scouts ended ~20 years ago, but there are also so many things that really depend on the individual troops. My brother's Boy Scout troop would frequently open certain day trips to female family members - I went on a couple hikes, went ice fishing, etc because of this when I was in high school.

The only similar programs I can think of from when I was growing up are the Indian Princesses (run by the YMCA) and something I don't remember the name of that was associated with the Masonic temple. Even then, the Y is still a faith-based organization and one of the tenets of Freemasonry is belief in a Supreme Being, so there really isn't an atheist option anywhere.