im the guy to talk to on this subject matter
tsukiyomi = exclusive to itachi this level of genjutsu has never been reached by any other uchiha.
kumui = exclusive to obito/kakashi
time playback = exclusive to madara
kotoamatsuki = exclusive to shisui
i think it has to do with blood line branches
sasuke&itachi... share the same m.s techs but differ on which one they use more
madara&inzuna... share the same m.s techs from what i've seen inzuna can slow time down for a small amount of time and madara can reverse time for a small period.
i think that shisui&kagami (if he had m.s) would of had simular techs like body flicker and kotoamatsuki
tsukiyomi = exclusive to itachi this level of genjutsu has never been reached by any other uchiha.
kumui = exclusive to obito/kakashi
time playback = exclusive to madara
kotoamatsuki = exclusive to shisui
i think it has to do with blood line branches
sasuke&itachi... share the same m.s techs but differ on which one they use more
madara&inzuna... share the same m.s techs from what i've seen inzuna can slow time down for a small amount of time and madara can reverse time for a small period.
i think that shisui&kagami (if he had m.s) would of had simular techs like body flicker and kotoamatsuki