The sexuality of trans people is as varied as that of cis people. From what I’ve observed on this forum, and others, is that I haven’t noticed a preponderance of any particular orientation. We are all over the place, it seems.
There is an interesting thought that I have run across. The suggestion is that trans women are attracted to males as a way of looking for validation as women. I can see how that might be true, but I have no idea as to how prevalent that might be.
Finally, people have moved away from the term transgenderED. The implication is that something happened that made us be transgender people as opposed to something that is inherent. In parallel, we don’t say lesbianED, for example…
Also, one can be transgender without the experience of gender dysphoria (the anxiety and discomfort resulting from a mismatch between sexual assignment at birth and perceived gender). This can be true for non-binary and intersex people, for example. Anyway, the concept of being transgender is broader than only being born in the wrong body…