No surprises here... I'd like to add that while most of those airlines have had their releases spread out over the last 4 years, 16 of the 20 Qatar models have been released in the past year. That is more than an entire monthly release set from Gemini!
If we take a look at the countries/continents most represented in this top 9, North America takes 113 of 236 total models. And yet NA collectors still ask for more modern aircraft! Legacy carriers from all over the world need to have a much better representation in NG's releases.