What are cis and trans alternate types of? I don’t think it’s “gender identity” because wouldn’t that just be man, woman or nonbinary regardless of whether they’re cis or trans? Cis/trans just being a qualifier?
If the answer is “I am cis” or “I am trans”, what is the question?
Edit: Someone came up with the term “gender congruity” and (after looking up the definition of “congruity”) I think this describes what I’m talking about perfectly.
“gender identity” might fit. “Identity” taken literally, to mean if the birth sex/gender and the actual expressed gender are identical.
Edit: or “gender divergence” if you want to focus on the difference instead of the sameness.