This list of particular Churches is not immediately analogous to the lists which appear below under the sub-headings for the Orthodox and the Oriental Orthodox Churches, as the Churches which appear under this sub-heading for the Catholic Church can not be called autocephalous in terms of Church governance. They all accept the immediate primary jurisdiction of the Pope. Their autonomy is a complicated topic, varying among them as also across time and place and circumstances. (The 23 Eastern Catholic Churches all bear the designation sui juris.) In place of the term particular Churches, or perhaps in addition thereto, one might speak of different Liturgical Rites, but hereto such an expression is not fully adequate, as it is not only aspects of the Divine Liturgy, the Mass, which vary among them, but also the ways in which other of the sacraments are celebrated. So one might speak of Sacramental Rites. Moreover, one can discern herein groups or groupings of Sacramental Rites, based on the histories of their transmission and on geographic and other factors: the Latin Family; the Coptic-Alexandrian Family; the Antiochian-Syriac Family, itself further subdivided between West Syriac and East Syriac; and the Byzantine-Greek (and later also Slavonic) Family which sprang from the Antiochian and the Armenian Rite, rather in a family of its own. By another scheme all the non-Latin particular Churches are simply called Eastern Catholic.

Glorious is the cultural diversity within Orthodox-Catholic Christianity.

Yet one must also recognize that some of this complexing springs forth from schism. After the particular Churches which did not accept the Council of Chalcedon, the Fourth Ecumenical Council of 451, and then again after or concurrently with the 9th through 13th-century progressive estrangement between Latin "West" and Byzantine-Greek (and also Slavonic) "East" which came to be known as the Great Schism, the Catholic Church variously, haltingly, episodically won over some adherents from the others. So too did the Orthodox in Communion with Constantinople. In the event of the reunification which is the goal being explored and pressed in these pages, it might be fair to assume that, for example, the Coptic Rite Catholic Church would simply be subsumed into the two-thousand-year-old Coptic Orthodox Church. Would the united particular Church then be called the Coptic Orthodox-Catholic Church? But be ever mindfull of the decided proclivity toward turf struggles, together with regular old episcopal pride, which plaque the Church perennially. Here, at least in the times we live in, one thinks not first of Copts but of the Ukrainians and Russians of the Byzantine-Slavonic Rite. Pray and persuade, but do not be surprised to find resistance along the path for no better reason than that this or that bishop wants to go on reigning and to do so without a boss anywhere in the wings.

(and here one could note the further complexity arising from differences in the Ordinary Form, the Extraordinary Form and of the Anglican Use. Tensions of a Twentieth Century genesis between those loyal to the former two, can perhaps be roughly analogized to the tensions of a Seventeenth Century genesis between the Старообрядцы – Old Ritualists (a.k.a., Old Believers) and the Patriarchate within the Russian Church (what we should be calling the Church in Russia), but perhaps not.)

using Coptic and Arabic as liturgical languages

using Geez as the liturgical languag

(India; with the second largest number of adherents of any Eastern Catholic Church, after the Ukrainian Greek Catholic Church; an ancient particular Church with a tradition of descent from Apostle Saint Thomas)

(Southern India; using Syriac, Malayalam, Tamil, Hindi and English)

(Lebanon; founded by Saint Maroun (or Maron or Maro, 410 †))
The righteous will flourish like a palm tree, they will grow like a cedar of Lebanon

With its seat in Kiev-Galicia, the largest of the Eastern Catholic Churches with perhaps six million faithful

Russian Orthodox Church in communion with Rome
и Леонид Фёдоров и Владимир Сергеевич Соловьёв

Originating among the Rusyn people who lived in Carpathian Ruthenia,
but now headquarted in Pittsburg, Pennsylvania

(including the Malankara Jacobite Syrian Orthodox Church in India)

(including the the Eritrean Orthodox Tewahedo Church)