רבי אלכסנדרי is mentioned, per a sefaria search, about 30 or so times between the two gemaras. I was wondering, however, which of the two Alexes this is referring to. There are two Alexes on this site of significant stature. Knowing the difference could help quote the Gemara better i.e. I’ll know who actually said what, and thus be able to say things בשם אומרו (Avos 6) more accurately. Of course, there are many such reasons one would want to procure such information, I presume.