Sure thing! I just listed a couple links to check out if you two were interested. On the nonbinary wiki, there are two sections that helped me in figuring out my ‘words’ even though I am a trans guy I still found it helpful. One section is titled nonbinary identities and can be found on <nonbinary.wiki/wiki/List_of_nonbinary_identities>. The other section is about uncommon nonbinary identities if it’s more boundless, if you will. It can be found under <nonbinary.wiki/wiki/List_of_uncommon_nonbinary_identities>.
For my other responses, I recommend using private browsing since you two live in conservative environments. I also mentioned trying out some small things like dressing with more loose clothing, I heard it can feel like wearing a dress without actually wearing a dress, and possibly growing out their hair. Some things that may or may not work depending on your situation can include adding a little bit of makeup or using 'feminine’ hygiene products. If she’s open to practicing more, there are a NUMBER of different pronouns and ones that can simply be created if he felt that applied.
In addition to nonbinary identities, I recommend checking out the terms like lunarian and solarian. These offer more ways to describe an identity if it’s more masculine kind of like a guy but in a way that isn’t part of the binary. These terms fall under the Galactian Alignment System, and - contrary to how the name may sound - is not geared towards those with DID. It’s simply a system of various terminology to describe one’s identity without being pulled into the conversation of “are you nonbinary amab or nonbinary afab” or having to describe one’s identity as it relates to the binary.
Hope this helps
