The majority of Ukrainian Orthodox are UOC-MP, and still the strongest church in Ukraine. The Orthodox Church of Ukraine was formed and supported by Poroshenko in 18, and most of the orthodox in Ukraine do not recognize it.
Kiev IS the birthplace of Russian Orthodoxy.
I would point out here, although I am not Orthodox but have studied it for awhile, that Orthodoxy is one communion and one faith. Which is why this particular division is of evil forces intent on destroying Eastern Orthodoxy.
(Actually, probably all of Christianity except the approved versions.)
...Orthodoxy is one communion and one faith.
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We have known Eastern Orthodox, including some monks with a rural Skete. The political, property, and financial aspects appear decentralized and in some instances, the various national organizations compete for what appears to be sponsorship of particular congregations. It was that organization that owned the property.
I speak as an observer, but I do recall the Skete in question changing from one to another national organization. It was difficult as an outsider to understand, but the changes seem to have concentrated on the national designation.