The best trans feminine representation on screen that I've seen that was *intentional* is Delenn from Babylon 5. Yes, despite the fact she's not textually a trans woman - she was actually meant to be a trans woman and she was written as if she was a trans woman from season 2 onwards. She has to deal with bigotry for who she is from her family, she has difficulty with living as who she is now until the women around her help her and teach her, she has to deal with so much from the people around her in terms of outright hatred and disrespect despite the fact that in the first season, she's one of the most powerful people in her society.
She only wasn't textually a trans woman because they didn't cast a trans woman (a little cowardly, but it *was* the 90's) and the tech the SFX they were trying to do in order to make her "male" for the first season just didn't work on their budget. So, instead, they wrote her dealing with transmisogyny in effect during the show, the subtext is that she's an intentional trans allegory.
She is also, in the show, one of the most important characters, she commands respect, affection, love, and authority among those who don't hate her for her transition, and she eventually overcomes that as well.
I love her and I love the way she's treated by the show. It's one of my favourite shows for a reason. It's a detriment that she's not textually a trans woman, but she *is* a trans woman in all the ways that matter.
I should also point out that JMS, the show's creator and nearly sole writer on the show, said that he wrote her *specifically* to be a trans allegory. He also worked with the Wachowski sisters on Sense8 after B5.
