I'm both transgendered and diagnosed with depression, and I've had good luck getting insured via Rudi Hoffman. I don't recall what the name of the insurance company was, and I haven't heard the final OK since the medical examination, but I don't foresee any difficulties. I was warned they'll most likely put me down on male rates (feh) despite being legally female, but I can deal with that even if I don't like it.
Same broker. Did you mention the depression to him explicitly?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.