@JollyGreenSleeves
Scotland qualified for Euro 2020 as well, 3 of the past 4 major International Tournaments.
As for players with International profiles -
Scott McTominay and Billy Gilmour won Serie A 2024/25 in Italy playing with Napoli, McTominay was named Serie A Player of the Year
Lewis Ferguson plays for Bologna and was also high in the Player of the Year voting a couple of seasons back
Josh Doig plays for Sassuolo, also in Italy, Keiron Bowie at Verona, Aaron Hickey also played in Italy before returning to the UK
Jack Hendry currently plays in Saudi Arabia, a money league which has attracted premium talent from all over Europe and South America
Che Adams has been playing in Serie A with Torino for the past couple of seasons and scoring regularly.
Scott McKenna also plays in Croatia with Dinamo Zagreb having previously played in both Spain and Denmark
Ryan Gauld plays in the MLS with Vancouver Whitecaps
These are just the players either in the current WC Squad or who have recently been capped, and doesn't include the dozens of other Scots playing in various European, Middle-eastern, and Far Eastern Leagues.
Contrast that with the picture down south where English players are apparently totally uninterested in testing themselves in foreign climes, and no, it's not because they have the richest league in the world, because English players very rarely moved abroad anyway even before the advent of the Premier League.