Best Strategy for Giving Leaders a Wake-up Call

I left a company because of a toxic culture, particularly for women. As a fairly senior leader, I did everything in my power to help the men at the top understand the magnitude of the problem and actually do something about it. I was unsuccessful and they continue to show no commitment to truly building an inclusive culture. Since I left, numerous other women have left and pointedly communicated many of the same things I did. Many women at the company still reach out to me for guidance and emotional support as they attempt to survive in the horrible culture at the company.Is there anything else I can or should do to support women at the company? I have this nagging voice saying I should be trying to protect other women from going through what I, and so many others, have experienced. Does a critical Glassdoor review help? Should I contact the senior leaders or board members directly? I would love to hear ideas about what strategies work to either protect women from walking into a bad situation or get the organization to change from within.