So i& thought about two different systems genic/term ideas, but ill share one/small example idea of one^^
first one being based off gendermirror and mirrorsexual, calling it Mirrorgenic, a term for systems who mirror a system that already exists, could form from trauma or not, or be endo/thoughtform, mirrorgenics wont always stay mirroring said system. Most might even go through polishing, a term where a sysmate in a mirrorgenic goes through the process of becoming its own from the mirroring!
Mirrorlets is a term to call sysmates who are still mirroring, this term is exclusive to mirrorgenic, but inclusive in use by the system, up them if they wanna use it
Sysmates can also form and mirror other sysmate, a form of extra protection, companionship, maybe no reason at all, example: a social protector who cant front when dealing with extreme tr*uma so an sysmate forms to mirror that other sysmate and might be able to deal with that, but may only front when that happens, but not exclusive if that make sense
Theses are just a few term/idea to what it is^^;;;;;