https://civitai.com/models/466010/gender-transition-slider-pony-illustrious

Not my model

adding "beard" in positive prompt helps if you want a male. Also the grading is reversed, so higher number is more male.

Made this because I saw someone had a bounty for it, so I thought maybe more people might be interested in something like this. It's seems to work very well in my short testing, strength depends on situation so feel free to experiment with it.

Might work with furry too, but I have not tested.

As always feedback and submitted images are appreciated, enjoy!