First ever that I remember is the Argentinian Camila Saenz.
https://www.ashemaletube.com/model/camila-saenz-413/
As far as I was concerned I saw her as a cis girl, because when I was smitten by her I did not even know what a trans was, and I did not know she was one. She truly opened my mind to a whole new world of sexuality.
The other one is Miriam Rivera, which makes me sad to this day, to lose such an angel. She was without a doubt one of the most magnetic and charming people you could ever meet.
They have a documentary about her on channel 4 right now actually:
https://www.independent.co.uk/arts-e...-b2535485.html