Visual porn used to do it for me - one look and my sex urge lit up like a boiler firing up.
After transition + estrogen + AA's my sex drive rapidly dropped to where it is now (post-op now) and my psycho-sexual response changed too.
I do still find visual porn very mildly stimulating but it's literally about 1% of what it was.
Watching porn with my ex wife, I used to want to fast-forward to the good bits and she used to complain because she wanted to watch (all the really crappy acting) as the story unfolds.
I think I'm pretty much in the place where most born women are - seeing it cold it's pretty much like watching a butcher cut meat. If I'm in the mood anyway then yes it can be midly stimulating and give me a very slight tingle down below, but it's easily ignored and forgotten.
Erotic fiction didn't used to do much for me but now I do find it a lot more rewarding. Sex is much more a frame of mind thing for women and reading means that you have to conjure up the images in your own mind so they will be more to your own taste.
I like it a lot more now and also like Romance and put a lot more value on cuddles and general intimacy.
Guys - always have liked dirty postcards, have got their visual centres hard-wired to their dicks