Controller: Viper, Astra -> S tier most maps. Brim/Omen are really weak in comparison.

Duelist: Jett, Reyna -> S tier most maps, Raze is S tier on the smaller maps. Phoenix is weak and....

Initiator: Skye -> S tier. Sova is also S tier but Breach and Kay/O are pretty meh in comparison and very situational.

Sentinel: Sage -> S tier most maps. KJ is also very strong. Cypher and Chamber are not weak but they don't outclass their female counterparts.

Bottom line: There are no weak or even average female agents.