Welcome to CAF, Tommy.
As Catholics have shared with you, the Church has liturgical norms set out by the Roman Missal. Likewise there are over 20 rites in the Church, that one could say, reflect one’s ethnic background…I am thinking of the Maronite (Lebanese) Catholic Church that is united to the Holy Father and all bishops. They have some parts of the Mass in Aramaic, the language Christ spoke, as well as Syriac. The music is different. The priest calls down God’s protection more times during the Mass than the Latin. But the structure, tone, intent is the same, the Liturgy of the Word and the Liturgy of the Eucharist.
The Eastern Church (Orthodox) is very similiar, their liturgies very beautiful, longer in duration. There are those who dip the Eucharist into the cup before giving Holy Communion.
Again differences will be in language, music, and customs that are celebrated usually at the greeting at the beginning of Mass and directed towards a particular theme.
The Anglicans and Lutherans follow the same liturgical readings as us during the year. I am not sure about Presbyterians and others.
If you were to go to Mass every day for three years, you would have heard the whole Bible. Cycle A the gospel of Matthew is covered that year. The following is Cycle B, Mark, and then the third, Cycle C is Luke’s gospels, The Eucharistic prayers are drawn from Sacred Scripture and St. John.
I was amazed at hearing the liturgy of St. John the Evangelist at a Marionite Church so many years ago, an ancient liturgical prayer.
When you go to Mass, you leave this world and enter into God’s space and time, so that one’s nationality, race, and ethnic origin is no longer, but our gathering united before the Lord where we extend Christ’s sacrifice. Here we are no longer living in linear time, but in the eternal time of God.
You can see different saints honored in different parts of the world. Then there are superstitious practices that are just that which happens outside the Church.
The Church’s presence and power is based on Jesus Christ. When people commit grave sin and practice superstition they are outside the Church. The remedy is the sacrament of Confession to return to the sacrament of the Eucharist.