The core unity of all cultures of Jews and Noahides alike is one thing and that thing is expressed in the Shema.
The Shema in Hebrew(transliterated): Shema Yisrael Adonai Eloheinu Adonai Echad
Shema in English: hear o Israel the Lord our G-d is one.
The oneness of G-d, exalted is he, is expressed beautifully in how an Ashkenazi Jew, Mizrahi Jew, and Sephardic Jew, and even a Noahide, all worship the same god. Our one holy lord, HaShem.
May The Most High bless and keep you.