Sudanese arabs have different looks, most of them remind me of dark skinned Egyptians, some others are bantu looking like Omar Al bashir (former president) who is from an arab tribe.They existed in Europe as late as 3,000 BCE. Ironically, the whitest areas today in Europe like the Baltic have the most of their ancestry.
They are not the majority look. The normal look for a Somali is to well look Somali (slim features).
Arab admixture in Sudanese Arabs happened later, as late as the Middle Ages. To me, they look more Arab than Habeshas. Habeshas look really weird and unlike any Arabs.
Habeshas on the other hand have more slim feauters and they have a lot of people with big aquiline noses that you would find among arabs or south Europeans