I think CORSI and FENWICK were essentially turned into SAT and USAT by the new NHL.com stats reboot (Shot Attempts and Unblocked Shot Attempts).
It's just a rebrand because CORSI and FENWICK are terrible, non-inclusive names for stats. Nobody new to fancy stats would have any idea where they come from or what they stand for or mean.
They are like calling basic +/- "MARCUS", or something like that.