I actually might well find a transwoman physically attractive, in theory. I certainly might have done 30 odd years ago when I was happily fancying Gene Loves Jezebel. If you disregard gender & just look at 'pretty male person wearing makeup & frills', then yup, that would have worked for me.
However, I find that sexual attraction is a fickle beast. Discovering that someone was very religious once sent it careering off over the horizon - Big Nope, don't care that he was gorgeous.
If someone was preoccupied with & reified gender, that would have the same effect: so no, I might momentarily feel attracted to a transwoman, but I couldn't sustain it. Different world views, not compatible, no point fancying them, game over.
Tbh that's probably as well - I don't imagine a transwoman would be comfortable with a female partner who saw their sex rather than their gender, so I suspect they'd be quite creeped out if I or another straight woman were leching at them.
& obviously I would want transwomen to be able to happily find compatible partners with as little as possible 'noise' from fundamentally incompatible admirers, just as I wish the same for anyone else.