Having spent about 6 years in Israel,Lebanon,Iran and UAE I feel I'm a little qualified to answer you.
They have a greater respect for each other and the law.
They're more religious and respectable.
They are VERY tolerant of other religions.
They don't 'look' like anything except people.
Israelis look like Greeks.
Lebanese look like Americans and Israelis,
Iranians look like Lebanese and French.?.. huh? ridiculous..
Is that how you expect them to be described so border guards know how to 'identify' and categorise them?
The only thing I can say is you don't get many blondes..apart from that.. they look like us.. O yeah.. is that coz they are?
It's like me saying Americans are all fat and loudmouth,complain that the roads are too small and always have burgers in their hands..
Or that British always drink tea,start football fights and always shake your hand when you beat them at sporting events..
Boyohboyohboy..
I HATE tea..