Not so much "gang showers" as areas with communal space. Like we're not literally sharing a shower head, nor are the showers generally completely open to view - there are usually curtains or something. But they're also small spaces, and it's not like there's room for us to go in fully clothed, strip down, shower, dry, then put on a different set of clothing. It's not totally self-contained.
Most of the showers I've used in gyms, yoga studios, high school, college, etc. end up having a changing area and a row of showers. You go to your locker and you strip down, put your dirty clothes in the locker, and wrap a towel around yourself. Then you go to the shower, clean up, and dry off. Drying off can sometimes be done in the shower stall, but a lot of times you end up bumping the curtain or having to step out for at least some of the drying. Then you wrap a towel around yourself again, go back to your locker, and you get dressed.
There almost always ends up being a fair bit of body exposure while we're undressing and dressing. In every shower room I've been in since high school, I end up seeing other female's nude or mostly nude bodies. Because we're all female, we don't view each other as risks... end even the lesbians don't ogle each other because we all know it makes us uncomfortable and we're all respectful of that.