I come from a Yiddish speaking, gefilte fish eating home. My great great grandfather was from Lithuania. Turns out that we are actually Sephardic as was proven from a DNA test.
All the differences are merely cultural. What I will say is, until very recently, it seems as if Sephardim were always believers even if they didn’t follow all the halachos. I hadn’t ever met an atheist Sephardi or one who didn’t believe in Matan Torah. Ashkenazim seem to have a huge gap. Zrisus for Torah on one end and reform/”humanistic” kafirus on the other.
Just my two dinars worth.