What differentiates the various synods within the Russian Orthodox Church Outside of Russia aka ROCOR?
I met someone who stated that their particular synod was in communion with ROCOR-A (ROCA), but not ROCOR-MP, because the latter was in communion with Moscow and Constantinople.
A quick google search told me that there were in fact multiple ROCOR groups that are distinct from ROCOR-A (ROCA) and who are not in communion with ROCOR-MP. Comments on those groups would be appreciated but not necessary to answer the question.
ROCOR merged with the Moscow Patriarch (MP) in the last decade and is now referred to as either ROCOR or ROCOR-MP.
I think that ROCOR-A is identical to ROCA, which is the Russian Orthodox Church Abroad, which broke with ROCOR when the latter merged with MP. ROCA and ROCOR used the refer to the same thing, but now they refer to two distinct groups, the differences of which I would like answered in this question.
Edit - From Wikipedia:
Critics of the reunification [of ROCOR and MP] argue that "the hierarchy in Moscow still has not properly addressed the issue of KGB infiltration of the church hierarchy during the Soviet period." It has also been noted that "some parishes and priests of the ROCOR have always rejected the idea of a reunification with the ROC [MP] and said they would leave the ROCOR if this happened. The communion in Moscow may accelerate their departure."
The signing of the act led to yet another small schism from the ROCOR, this time taking with it Bishop Agafangel (Pashkovsky) of Odessa and Tauria, and with him some of ROCOR's parishes in the Ukraine, which refused to enter the jurisdiction of the Ukrainian Orthodox Church. Agafangel was subsequently suspended by the ROCOR synod for disobedience. Despite censure, Agafangel persisted with the support of ROCOR parishes inside and outside of the Ukraine which had also refused to submit to the Act of Canonical Communion. Agafangel subsequently ordained Bishop Andronik (Kotliaroff) with the assistance of Greek bishops from the Holy Synod in Resistance; these ordinations signified the breach between ROCOR and those who would refused communion with Moscow. At a Fifth All-Diaspora Council (composed of clergy who did not accept the Act of Canonical Communion), Bishop Agafangel was elevated to the rank of metropolitan; he now heads the Russian Orthodox Church Abroad - Provisional Supreme Church Authority (ROCA-PSCA) as Metropolitan Agafangel of New York and Eastern America.