There's a very good chance that many of these are not real. I'm convinced that first one is fake. The second person on the list is also an extreme outlier.
Yes, I checked to see the status of the Jeanne Calment controversy before I posted this, and earlier this year someone planned on using DNA to conclude once and for all, but so far the only viable sample has not been released for testing. Nevertheless, both countries 1 and 2 would still appear on the list without these outliers.