Giannis Antetokounmpo, Luka Doncic, Rudy Gobert, Nikola Jokic, and Joel Embiid are all international players on Hall-of-Fame trajectories. They are all under 30 and were all drafted within the last eight years.
The United States will always have the best international team because of the sheer number of kids who play basketball, so I can't imagine another country producing the same saturation of quality players. But as far as the U.S. versus the rest, the world is catching up and may already be better.
A starting 5 of current international players in the NBA would probably defeat the best the U.S. has to offer. Ben Simmons at point guard, Luka Doncic at shooting guard, Giannis Antetokounmpo at Small Forward, Nikola Jokic at Power Forward, and Joel Embiid at Center. That leaves out the defensive player of the year in Rudy Gobert. Along with talents like Jamal Murray, Nikola Vucevic, Kristaps Porzingis, Dennis Schroeder, Shai Gilgeous Alexander, Andrew Wiggins, Deandre Ayton, and Pascal Siakam.
The NBA clamored so much for international exposure, and these are the results.
In 2019, for the first time in history, the four major NBA Individual awards were won by international players.
Giannis Antetokounmpo of Greece/Nigeria won the MVP, Luka Doncic of Slovenia won the Rookie of the Year, Rudy Gobert of France won Defensive Player of the Year, Pascal Siakam of Cameroon won Most Improved Player. And for safe measure, Domantas Sabonis of Lithuania also finished third in 6th man of the year.