Transcarpathia
The article claims the Church is only dominanat in three regions (I suppose you have Lviv, Ivano-Frankivsk and Ternopil in mind?), actually It is also dominant in Transcarpathia, although there it has diffrent roots steming from the union of Uzzhorod. Today it has a slightly diffrent status inside the Ukrainian church so maybe that's why it wasn't included here. Unfortunetly I'm not an expert on ecclesiastic history and my English is quite week so I'm unable to contribute to the article.