I'm not sure I would be willing to classify whole denominations as PC. I'm aware of progressive-leaning PCUSA, Methodist, Lutheran, Baptist, Episcopal, and other congregations, but there are also very conservative congregations within those denominations. I think you might just have to visit as has been suggested in order to assess each congregation's views (unless you can find someone familiar with local congregations who might be able to make some suggestions).
I've heard some complaints about PC supporters that we are trying to start a new Progressive denomination rather than reforming the existing denominations. I'm not sure that would be a bad thing, but since I see religion in general as being a human creation as we try to find a connection with the divine and each other, I think there will always be different denominations so that people can find polity and worship styles that suit their tastes.
Peace,
JoKeR