Aside from the traditional 11-a-side American Football Leagues, and the Lingerie/Legends Football Leagues (7-a-side) there is also 8-a-side Arena/Indoor Football Leagues played by Ladies. 8-a-side Arena/Indoor American Football was introduced to help smaller towns host Pro American Football, and it was inevitable that Ladies League would develop too.
Ladies Indoor Football Leagues
Super 8 Football League Ladies Baja (Mexico):
 Irish American Football Association (2018) Nostalgia – A look a some pictures from the archives [Internet] Available from: http://www.americanfootball.ie/wp-content/uploads/2017/10/20171016_165339-1024×768.jpg [Accessed 3 July 2018]