I don’t believe such a place exists. :sad_yes:
Notice in my (admittedly rather disjointed) earlier post where I said In other words, the West more-or-less mucked up the “old” system. The question is: why? I suppose there could be a number of answers to that question, one of which is from a (misguided) sense of superiority. Whatever the reason, Rome seems to claim de facto universal jurisdiction. I can, as I implied earlier, deal with that in the canonical West, but to me it’s a bitter pill to swallow in the canonical East.
I mentioned Syria earlier, but I probably should have said the Patriarchate of Antioch. Anyway, the political realities indeed had a great bearing, giving rise to several parallel jurisdictions of and for the canonical East (Syriacs, Maronites, Melkites, Chaldeans, at least), which is a little convoluted, but doesn’t violate the territorial integrity of the canonical East. The West added its own jurisdictions, which of course does violate that territorial integrity.
Using your example, if for some reason there was an influx of, say, Syro-Malabars to Ukraine, I suspect they would have two choices: either practice in the UGCC (with or without formal transfer) or be subject to the local Latin Rite authority. If there was a priest involved, he would, I believe, have to petition Rome for faculties to function in Ukraine, and would then come under the local (Latin Rite) Ordinary. Of course the very existence of a Latin Rite diocese in Ukraine might be part of that “bitter pill” I mentioned above, although with shifting boundaries, I suppose an argument could be made for its legitimacy, since most of the Latin Rite faithful are in territory that was, at one time or another, Polish.
One can look at the relatively recent trend of establishing Eastern/Oriental jurisdictions in the canonical West as the lesser sibling of the Western practice of establishing Latin Rite jurisdictions in the canonical East, but it really doesn’t help much. I’d still prefer the “old way” minus the “back of the bus” attitude that was/is unfortunately all to prevalent.