Shall we count together ;)..
Yalla start

Lebanese,Syrians, british, americans, mexicans, pakistanis, philipinos, indians, bengalis, portoguese, spanish, french, Israeles, palestinians, egyptions, moroccons, tunisians, yamanis, sodanis, south africans, nepals,indonisians, chinese, japanese ....those are the nationalities ive met so far...check for the rest !

I think Qatar is a mix of every country on earth except for ALASKA ;)