I'm not aware of any listing outside of HRC, with that said my personal experience is looking at more forward thinking or progressive companies, it's not a sure bet but it seems to be a good indicator. I fully understand your concern, I live in North Dakota and there are parts of the state that are still stuck in the 1950's, so safety is a big concern for a girl like me. Have you ever thought about DSP work? It's not for everyone, but it's rewarding and even for a state like ND they by my experience very transgender friendly.