This website has a lot of info: https://transfemscience.org/
I'd also see if you can get a consult with an endocrinologist, especially one who prescribes HRT already, they might be able to discuss the level of detail you are looking for better than a GP. You should be able to look up endocrinologists on the UHC website, some will even have the tag "LGBTQ friendly" or something like it, I would start there!
Besides the actual news, that link seems sketchy, I immediately got a "yOu HaVe a ViRuS" popup