I am transfeminine. Although I feel more female, and dress female, I don’t sound female and don’t look particularly female. So I don’t really pass as female, and not sure I pass as male anymore, so non-binary seem more appropriate.
If I am asked if I am a he or she, I say she, but prefer they.
If asked if I am a Mr or Ms, I say Ms but prefer Mx.
My work, bank, doctor’s surgery all have me down as Mx now. Most businesses that I have accounts with have me as Mx, but if it isn’t an option then it’s Ms.