Is It Transphobic?

basically im a gay dude who has no issues on dating or fucking trans guys. in fact, i even consider some trans guys to be really fucking hot an attractive.
however, I've noticed that the only type of trans men that I can be attracted to are those who look somewhat masculine (not necessarily herculean-like, but at least those who could pass as cis guys) and who have transitioned. I'm not really attracted in those who are either not transitioning or are just getting started.
I'd like to know whether you guys think it's transphobic or not since I've talked about it with plenty other people as well and I've gotten pretty varied responses. obviously that doesn't mean I'm gonna change who I'm attracted to since I can't :p I'd just like to know whether you'd think that's transphobic or not