A curious competition is the Combined Counties League Women’s Cup. Can’t find this season’s fixtures and results on either the FA or CoCo websites
Looking at last season’s just three of the clubs seem to be connected to clubs with men’s teams in the CoCo, Guildford, Balham & CB Hounslow though one of teams I’ve played against (and once with), Rising Ballers, has a CoCo team but don’t enter the cup. Both Kent United (Now Ebbsfleet) & London Seaward entered first and reserve teams whilst entered their youth team.