We have always existed.

https://read.dukeupress.edu/tsq/article/8/2/238/173627/Decolonizing-Trans-Gender-Studies-Teaching-Gender

Important Figures

Michael Dillon, became a medical doctor and the first documented person to receive a phalloplasty.

https://transdatalibrary.org/about/

https://healthliberationnow.com/