I keep thinking about Animal Farm, George Orwell..."All animals are equal, but some animals are more equal than others."
Sheila Jeffreys describes sex castes. Inevitably, it's trans men at the bottom (for interesting reasons in line with yours but I can't find them right now).
“Men's ideas about what women are have been formed from their ruling caste position, and have assigned women characteristics that would most advantage their masters, as well as justify men's rule over them. They do not represent 'truth' but have been promoted as if they were, with the backing of science and patriarchal views of biology.”
― Sheila Jeffreys, Gender Hurts: A Feminist Analysis of the Politics of Transgenderism
“As a feminist, I consider the female pronoun to be an honorific, a term that conveys respect. Respect is due to women as members of a sex caste that have survived subordination and deserve to be addressed with honour. Men who transgender cannot occupy such a position.”
― Sheila Jeffreys, Gender Hurts: A Feminist Analysis of the Politics of Transgenderism
“Men's sexual freedom has depended, and still does to a large extent, upon their ownership of women's bodies. Men have bought, sold and traded women as things to be used. Women are still regularly raped in marriage, even though most Western countries have now changed their laws to recognize that wives have a right not to be raped. Women are still bought and sold in marriage in many countries, and in the vast majority of countries of the world their bodies are still legally owned by their husbands. In prostitution and pornography, the mail-order bride business and reproductive surrogacy, the international trade in women is a burgeoning industry. Men's ownership of women's bodies has been the substrate on which their idea of sexual freedom was born and given its meaning. This is why it includes the right to buy access to women, men, and children as an important way of demonstrating that freedom. At the base of men's sexual freedom agenda is the concept of the rights of the male individual. Pateman points out that women cannot gain recognition as individuals, since the very concept of the 'individual' is male.”
“Women do not decide at some time in adulthood that they would like other people to understand them to be women, because being a woman is not an ‘identity’. Women’s experience does not resemble that of men who adopt the ‘gender identity’ of being female or being women in any respect. The idea of ‘gender identity’ disappears biology and all the experiences that those with female biology have of being reared in a caste system based on sex.”
― Sheila Jeffreys, Gender Hurts: A Feminist Analysis of the Politics of Transgenderism