The oldest of those gold medal team’s players are only in a few years starting to enter their prime, and most of those kids are still pretty far away from their prime. In 5 years there’s going to be many star players from those teams at the adult level. Now we have already three in this team that are stars at adult top level, but not yet even close to their prime yet (Aho, Rantanen and even to some extent Teräväinen), and there’s going to be plenty more each year. Puljujärvi and Borgström will still most probably become very good players in a couple of years, and then there is Laine and Barkov whom are already stars and especially Laine is going to still develop massively.
Then there will only after them be coming the younger ones like Tolvanen, Heiskanen, Vesalainen, Heponiemi, Jokiharju, Juolevi, Välimäki and Vaakanainen. And only after those young guys will the latest U18 champions start entering the stage with Kakko, Kotkaniemi, Nordgren, Kupari, Anttoni Honka etc.
Most of these players are going to be really good players at the adult level at some point and many already are. Sweden might be close but, I’m still pretty sure that in a few years Finland will be ahead with the general top level players. Right now Sweden is still ahead, but their a tad weaker junior years will start to show at least by some margin in a few years. But of course they will still have a chance to win a big men’s tournament practically any year, just like Finland and the other 4 regular top 4 countries.