It's a good list, but is heavily biased to North American (read USA) tastes.
No way the US should be there IMO. Their cuisine is borrowed from everywhere else, and even their regional dishes are heavily influenced from the Caribbean, Mexico and Europe. They should be at the bottom. What Americans mostly eat is over processed industrialized and commercialized food with sky high levels of salt, sugar and fat. {/rant}
Asia also offers Vietnam, Korea, and Indonesia, all of which have cuisines worthy of a high ranking.
I like your addition of Lebanon - there should certainly be Middle Eastern component as well as one from North Africa (Morocco) and Central Africa. Jamaica may indeed boast sufficient uniqueness to qualify as well.
I can't comment on South America, since most of what I've seen is a Spanish / Portuguese / Dutch hybrid.
Perhaps an entry or more from Northern /Eastern Europe. The food of Russia, Hungary, Czech, and Nordic and Scandinavian counties warrant consideration as well.
These days, I mostly cook Asian style dishes, predominantly from Thailand, Vietnam, Japan and Philippines. It used to be Italian, French, Greek and Hungarian.
There is no country I know of that can't offer up something delicious and unique created with fresh local products and a creative chef.
Tastes change with experience and media influenced popularity, so I'll assume that list will add and lose candidates on a regular basis.
