I'm confused about your question.
As long as you can find a white stripe clown, it can be a female. Clownfish change sex depending on dominance, with a female being the most dominant and the male being the second most dominant clownfish in a group.
For the other part of your question, white stripe maroons are the same species as gold stripe maroons. They're just color variations that come from different locations. So the answer is yes, they will be able to pair.