FWIW, I do KNOW that they do NOT agree completely.
I grew up in WNY where the Ukrainian Catholic church is a strong presence and am very well aware that there are doctrinal differences between them and the Roman rite and that the Roman rite does not consider them as correctly Catholic as they themselves are.
And the Ukrainian Catholics know that the Roman rite looks down on them.
I do KNOW that they do NOT agree completely.
I am more familiar with the Maronite Catholic Church than I am with any of the others.
The following statement from the website of St. Raymond’s Maronite Cathedral in St. Louis describes the relationship among the various Catholic churches that are in communion with each other.
“Saint Raymond’s Maronite Cathedral is one of the Catholic Churches in Saint Louis, Missouri. However, we are very unique in several respects from our sister churches here in Saint Louis.
“Many of our parishioners are of Arabic or Lebanese descent. You will find many families came over from the Middle East throughout the past 100 years. However, being Lebanese is not a requirement and anyone who loves our ancient Maronite tradition is encouraged to join our church.
“We have a unique Liturgy compared to our sister churches. While our Liturgical Language is Aramic, our church has both English and Arabic Speakers. If you only speak English or only Arabic you should have no trouble participating in our Liturgy.
“We are of the Maronite Tradition. Fully Catholic but different from Roman Catholic, but in full communion with Rome. Meaning that Roman Catholics can fully participate in our Mass and receive the Eucharist.
“The Maronite Church is one of many churches which are from Eastern and Western Catholic traditions.
“Catholic: Member of one holy apostolic church.
“Western: Originating in the ancient see of Rome
“Eastern: Originating in ancient sees of Antioch, Alexandria and Constantinople
“As Jesus commissioned the apostles to go into the world and make disciples of all nations, the early church grew and spread out from Jerusalem. It experienced other traditions, cultures, customs, languages, art forms, architecture and music. Eastern and Western Christians expressed the same basic truths of their Catholic faith in unique ways and worshiped differently.
“There are over 750 million Catholics (Eastern and Western) in the world. Nearly 2 million Catholics of the Eastern Churches live in the United States.
“All Catholics share three important things:
- Apostolic Faith
- Mysteries/Sacraments
- Unity with Pope (Successor of Peter)
“A Church is not the same as a rite. Within the Catholic Church there are 22 autonomous churches, each of which follows one of the 6 major rites.”
http://straymondsmaronitecathedral.com/page10.php
Here’s another statement, this from the website of Nativity Ukrainian Church in Eugene, OR.
“Ukrainian Catholic Church
“Eastern Christianity took a firm root in Ukraine in 989 when Vladimir, Prince of Kiev, embraced the Christian Faith and was baptized. Soon afterwards many missionaries from the Byzantine Empire arrived, having been sent by the Patriarch of Constantinople to preach the Gospel.
“When the Church of Rome and the Church of Constantinople severed ties with one another in the 11th century, the Church in Ukraine gradually followed suit and finally gave up the bonds of unity with Rome. When Ukrainian Orthodox bishops met at a council in Brest-Litovsk in 1595, seven bishops decided to re-establish communion with Rome. Guaranteed that their Byzantine tradition and Liturgy would be respected and recognized by Rome, they and many priests and lay faithful were re-united with the See of Rome, while others continued to remain Orthodox.
“In the 19th century many Ukrainian Catholics began to emigrate to North America, bringing their pastors, traditions and liturgy to Canada and the United States. Under Communist rule, Catholics in Ukraine were persecuted, with many being imprisoned and murdered; in 1945 all the Ukrainian Catholic bishops were arrested or killed.
“Today the Ukrainian Catholic Church is the largest Eastern Catholic Church, with about 5 million faithful. It is led by His Beatitude Sviatoslav (Shevchuk), Major Archbishop of Kyiv-Galicia. His election was confirmed by Pope Benedict XVI on 25 March 2011.”
Doctrinally they are indistinct.
No they don't.