First of all You can't use south as everything below Galkacyo, it just wouldn't be right. There are many different subcultures in the South.How so? What's the cultural difference between Kismayo and Bossaso?
Let's just make it simple and say MJ culture is different from Hawiye culture. For example, back in the day in PL you wouldn't be able to marry your 2nd/3rd cousin or you'd have to pay a fine. It's part of our xeer system. Dude there's so much more things you don't know. Unfortunately, we're both ignorant.