TS provided in alt text by playmatething, thank you!
apollogenic (1, 2) and apollonorma (3,4)
apollogenic: a system that was formed or discovered (partially or fully) due to some sort of prophecy, typically a joke. can also be used for subsystems or individual sysmates.
apollonorma: a sysmate that was formed or split due to some sort of prophecy, typically a joke. added for those who like specifics for their labels.
name comes from Apollo's gift of prophecy, which is what it reminded us of when this phenomenon kept happening again and again to our system.
examples (non-exclusive, added just so one can get a better idea of this) could be:
seeing a new sysmate in a dream before they actually form
joking about 'what if's about your system before those what ifs come true
joking about 'honorary system members' for your paras, F/Os or innerworld NPCs before they gain sentience or get introjected.
I dont know if there's an active plural term archive but it would be lovely if anyone could tag them. otherwise @radiomogai
TS provided in alt text