I recently came across information about the contributions of black women preachers in the 19th century to the quest for gender equality in the church.
5 (Dead) Women Every Egalitarian Should Know
Here is a short list of women who made significant contributions to the Christian egalitarian movement long before Betty Friedan and The Feminine Mystique came on the scene: Margaret Fox, Susanna Wesley, Sojourner Truth, Phoebe Palmer, Catherina Booth.