Biological works just fine for me tbh. You have biological women, transwomen, biological men and trans men.
Though tbh, the only way to actually be a man, rather than a transman, or a woman rather than a transwoman is biologically.
Cis is almost always used in a sneery/negative way. It also assumes that you identify with all of the stereotypes forced onto you because of your sex. Plus, I have been told many times that I am 'just cis' when this is not actually the case at all given I do not have a 'gender' at all and do not follow that religious type thinking of gendered souls and whatnot. But when I state I am not actually cis, I am told I am wrong