The drop between the "Top 3" and "below the Top 3" is too profound to claim the existence of the "Top 4".
I kind of agree, but let's say that we're going to try and peg #4 anyway. Fair enough to say that Finland, regardless of anyone's expectations, pretty reliably finishes in the top 4 when it comes to international play (Olympics, for example). But if we're talking about "hockey countries", I think there's a huge accounting to be done in terms of both the size/quality of any country's domestic league and the size/quality of talent pool that they're exporting to the NHL (i.e. the highest testing ground for league play in the world) before Finland can lay claim to the #4
overall spot.
I think it's fair to say that Canada, the US, and Russia all have a decided advantage over the rest in terms of success internationally across all organized levels, size and strength of domestic professional league, and the overall number and quality ("on paper", if some prefer) of player passing the NHL "test". If Sweden and Finland are to be the next up for reckoning, I don't think Finland is a "no brainer" for #4 just because they pull out some inspired performances in some one-and-done 2 week tournaments. Sweden's domestic league is "pretty damn good", and by hockeyreference's count there are 250 Swedes in the NHL vs 168 Finns.
So unless there is a way of really, really up-selling the case of a
lot of those Finns, I think Sweden still has the stronger case for #4 based on at least 2/3 of this simple (yet sort of "wide-scoped") kind of reckoning (international results weighing probably requiring a thread's worth of discussion itself). Is there enough in the difference based on relative international success across all levels to raise Finland above Sweden? I'm not so sure, but I'd read anyone's case.