I worked for a rent-a-rig oil company in Venezuela back in the '80s. A Mexican guy there said that all of South America considered Mexico as the bottom-of-the-barrel linguistically (Ecuador was on top) - so I have no doubt that that ranking goes for other aspects as well.
That guy was full of it
Cuba and Argentina. WERE most snotty....top of heap....whitest too
Ecuador....not much
Bottom tier......Puerto Rico and Dom Rep...Nicaragua maybe....Honduras
Mexico was thought of as north American Latino....cowboyish
My opinion....all the good Cubans came here before 1980....Cuba is now tropical Detroit
My two bits....Colombia is top dawg....hardy patriotic folks....little bit of everything .....lotsa issues but wonderful heritage
Chile second runner up
Guatemala most exotic
The most Indian or black Hispanic nations....the most problems.....nothing new there
I have visited....lived in...worked....in every country south of Key West or McAllen