Philly isn't a very Orthodox city, certainly compared to the rest of Pennsylvania, which is OCA and ACROD central. A handful of parishes of all ethnicities/jurisdictions (Greek, the three Russian denominations, Ukrainian, Serbian, Albanian, Romanian, and, outside the city, Arab and a couple of ACROD parishes). The ROCOR parish isn't unfriendly, just very Russian (WWII refugees), only one of two really Russian places, the other being MP. The Serbian parish at least used to be in the city but it may have moved to the 'burbs. I understand it was very isolated from the other Orthodox ones, but then again, with different ethnic groups and different languages, the churches have little in common. The ROCOR place in Tullytown outside the city (never been) is recent and ex-vagante. One convert Antiochian place in the 'burbs (the Arab one's close to the city).
Also, a couple of Armenian and Coptic churches in the metro area.
Also, Ukrainian Catholics (their cathedral and several parishes), Ruthenian Catholics (two parishes, maybe one now), a small Armenian Catholic parish, and a Maronite parish. The Ukes and Ruthenians are fading away as far as I can tell. Armenian Catholic nuns (like conservative but modern Roman Catholic ones) run a private school that many local Armenians, Catholic, Armenian Apostolic, and Congregational, send their children to.