No one I know in real life or speak to online is transgendered as far as I know. Not out of any desire of mine *not* to know any transgendered people, it's just turned out that way. I watch ZJemptv on youtube, who I believe is transgendered--a MtF Lesbian. That's about the height of my experience.
Gay transguy here. I have a few trans friends. And quite a few gender-variant friends. The fun part is the ones who are gender-variant who came out because they started thinking about it after I came out.
Recently started living openly as trans. Not everyone knows (for example family members and people in my hometown) but for the most part new people I am meeting know me as a guy, or those who met me before are aware I am trans.