Jobs didn't look stereotypically middle eastern.

That is so true. Personal I look very very stereotypically Scots/Irish but I also have a lot of Native American ancestry. As sad as it makes me to say I've had a far easier path in live than my cousins who were undeniably Native but from an extremely similar background and level of income growing up, in a 10 mile radius of each other. I was certainly treated differently then them.

The results typically show that lighter-skinned people are viewed more positively than darker-skinned people, even when the person providing the opinions is a darker-skinned person.

This can be trivially verified by testing the hypothesis, "In the relationship triangle, the protagonist will always choose the lighter-skinned person in the end," against all existing Tyler Perry movies.

And that's just passive cultural enforcement. I'm sure that the regular two-minutes hate on that one photo of Osama bin Laden as the quintessential, stereotypical terrorist mastermind did no favors to anyone sharing similar facial features.

This shows your lack of knowledge of the Middle-East. People in Syria/Lebanon look extremely different from the people in Saudi Arabia. They just happen to speak the same language (heck the accent is quite different too)