It would appear that our sefardic cousins/brothers had a different tradition in clothing
I cannot imagine the Ben Ish Chai or The Abuchatzaira dynasty in black caftans and straimals or western suits and borsalino it is true that today they imitate the western dress but the previous generations did not look like shetel yids but had their own traditional garb differing from location to location from the Atlantic coast to the center of Asia
so one may assume that we to “adopted clothing styles” along the long history of European exile