There are others of course. However I also realize something. A Church divided cannot stand. We are UNIVERSAL, however how can we be UNIVERSAL if we think, worship, pray, say mass, differently?
The Visible Church has, since the 2nd century, never had but one licit and valid expression, but always several.
By the second century, divergence was already present between the great Sees of Byzantium, Jerusalem, Rome, Antioch, Alexandria, and also the missions of St Thomas in India.
And no point since the 6th has all of what is know known as Italy used only one form of liturgy; the Italo-Albanian Greek Catholic Church uses the Byzantine liturgies, and has never been out of communion with Rome.
Since the 1100’s, the Maronite Church has been part of the Catholic Church, using the Syriac mass.
Since the 1200’s, the Dominican Order has had a different mass from the Rest of the Church, a privilege granted them by the Papacy.
The Dioceses of the Dalmatian ecclesiastical province have had a permission to translate the Roman missal into Church Slavonic, and that was the missal used there right up to Vatican II and the OF missal.
One is united to the church by unity with one’s bishop, and one’s bishop being united to the church. And one is united to God by the sacraments of the church, in any of the myriad approved forms, performed by it’s myriad ministers. 23 Churches Sui Iuris, over 30 distinct liturgical traditions, and over 100 distinct approved texts for the divine worship services to consecrate the Eucharist. (Tho, 28 of them are variations on 2 greek-byzantine sources…)
Unity in the church has never been about everyone using the same liturgical text.