The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
Well, we know it's not Improbably Female Cast, because that's about "when a work's cast almost entirely consists of women in a situation where this would be unusual", and in this case the situation entirely justifies it. It's not Chromosome Casting either, because you said the men have a significant role. I guess the closest trope would be The One Guy? Except there is more than one guy, and you didn't actually say if they're on the women's "team" or not. If there were two guys, you would have an inversion of Two Girls to a Team...
To be honest, I think this might be getting into People Sit on Chairs territory. The creators chose to tell a Ripped from the Headlines story about a Women's March, and the gender of the characters incidentally follows from that. It's not like they deliberately constructed a story with a 21:5 gender ratio.
But wait - I've been implicitly assuming that all 28 of these actors have roles of equal importance. Possible, but not very likely. I mean, an Ensemble Cast is one thing, but 28 is too many people to follow. Frankly, I doubt you can have a female-centric work with five men who are all integral to the plot but not antagonists. So if we can define a main cast, we might have a better shot at finding a trope that fits.
Incidentally, this work will certainly pass The Bechdel Test.
Edited by FactoidCow
@crazysamaritan: Well, in this specific case, we've established that the main plot is women organizing a Women's March. With that setup, you would have to be deliberately trying to fail the Test.
Edited by FactoidCow
Thank you. I didn't know this would fit as People Sit On Chairs though, to be fair.
Other than Dramatization, what trope would fit this scenario?:
A Lifetime Movie of the Week focuses on female protesters organizing a Women's March in 2017, and the cast of twenty-eight actors is nearly all-female, with only five male actors in the cast (out of the 28 actors) - justified since it's about the female protestors.
The men aren't a Hate Sink or antagonists, but integral to the plot.