Let's keep going. Iceland are better than England, the Netherlands, Croatia, Turkey and the Czechs, based on the last couple of years.
My personal favourite: New Zealand were the only undefeated team at WC 2010.
These tournaments have a huge element of luck, in terms of what happens at them. They are so short. On the day, sometimes, Crystal Palace beats Chelsea, but people don't start writing stories about how Crystal Palace is the same as Chelsea.
You can cherry pick anything you want, that's why you have to have a time series.
EDIT:
I think people are possibly being a bit harsh on the US. They have gotten out of the group stage 3 of the last 4 times. In 2014 they were in a Group of Death (with Ghana, Portugal and Germany, and finished in the top two)
https://en.wikipedia.org/wiki/United...FIFA_World_Cup
They are not that far from elite status. Not making it is a pretty big upset.
Mexico have made it out of the group stage 7 straight times. That is actually quite impressive. They clearly deserve to consider themselves, and be considered, an elite program.
https://en.wikipedia.org/wiki/Mexico...FIFA_World_Cup