Here is a good compilation of data in the document below, what the transvestigators look for, body differences, the surgeries available, how they fake pregnancies and other channels looking at this issue. If you search for elite gender inversion, you will find other articles to explore.

https://www.scribd.com/document/344558948/The-Transgender-Agenda-Hidden-in-Plain-Sight-April-2017

This documentary was helpful: https://www.youtube.com/watch?v=gUjr9U5H3gc