I had SRS. Full orchiectomy/penetctomy/vaginoplasty/vulvaplasty.

I've never felt any phantom sensations. If anything, I sometimes felt the opposite, like a phantom vag before I got surgery. But afterwards? Nothing. The only similar effect was a bit of neural remapping that took a few days. Your body has an internal 3D representation of its own shape. That's why if something touches your skin somewhere on your body, you can instantly know where it is. SRS is basically genital origami. Things get cut, shifted, repositioned, and sewn back together. Individual bits of tissue and nerves end up in radically different locations than pre-surgery. And this requires a bit of spacial neural remapping. For example, in the technique that was used on me, a clitoris is formed from the head of the penis. Initially when I felt it, there was incongruity. My eyes could see that I was touching something right on the surface of my body. However, the spatial awareness part of my brain was saying, "this nerve correlates to a location several inches outside the main body." This mismatch was quite uncanny. However, thankfully it only lasted a few days. After a few days the body learns the new locations of all the relocated nerves and the uncanny sensation disappeared. I've never had anything that could be described as a phantom penis sensation. And I had SRS back in 2013.