I know some Palestinian Arabs who look like light skin Africans or mixed race, not sure they consider themselves "Afro-Arab" tho
There are even more Saudis who look like your average light skin AA, but they are seen as normal Arabs especially if they're from one of the main tribes. You could have people from the exact same tribe yet one looks like a cac and the other looks light skin black. The children of slave masters and slave women inherited the tribe and lineage of their father. But then you also have a class of people in some parts of the Gulf who are descended from black slaves, they are Nationals of those Arab countries, but they treated like lesser citizens. I met some when I lived the UAE.
Like the Akhdam ("servants") in Yemen who are extremely impoverished and are treated poorly.
It's very complicated and it depends a lot on ppls lineage. You have Arabs in Arabia (not arabized Arabs, I mean ethics Arabs) who look African yet they are seen as pure Arabs due to their lineage. Meanwhile you have Arabs who look exactly the same as the former group, but they are seen as arabized Africans.