Okay, compare (a) a Tridentine Rite Latin High Mass; (b) a Syro-Malabar Catholic Divine Liturgy; (c) a sung Ukrainian Catholic Byzantine Divine Liturgy; (d) a Maronite Catholic Liturgy; and (e) a Sunday Mass according to the 1970 Roman Missal (i.e., the "Ordinary Form") in a typical American Latin Rite parish, and then try to tell me that there's no "diversity of Christian expression in worship" in Catholicism and that Catholicism is "monolithic".
“... and then try to tell me that there’s no “diversity of Christian expression in worship” in Catholicism and that Catholicism is “monolithic”.”
I would encourage you to not stop there, but to understand the pleasure of God in the totality of worship in any and every instance where “two or more are gathered together in My Name.”