Nothing New Under the Sun

Of course, "Blanchard's" typology is subject to Stigler's law of eponymy.

No, I'm not talking about earlier Western sexologists like Robert Stoller, Magnus Hirchfield, or Blanchard's mentor Kurt Freund.

I'm talking about Abu Zakaria Yahya Ibn Sharaf al-Nawawī writing in the 13th century CE:

A mukhannath is the one ("male") who carries in his movements, in his appearance and in his language the characteristics of a woman. There are two types; the first is the one in whom these characteristics are innate, he did not put them on by himself, and therein is no guilt, no blame and no shame, as long as he does not perform any (illicit) act or exploit it for money (prostitution etc.). The second type acts like a woman out of immoral purposes and he is the sinner and blameworthy.