For the record, here's a list of (about) all NHL players in the tournament except for Canada and US. (I added the three Russians to a list someone else made, not sure if there's more additions coming.)
You could barely build one full roster with these guys
Belarus:
Yegor Sharangovich (F, Devils)
Czech:
Dominik Kubalík (F, Chicago)
Filip Zadina (F, Detroit)
Jakub Vrána (F, Detroit)
Filip Hronek (D, Detroit)
Libor Hájek (D, Rangers)
Filip Chytil (D, Rangers)
Finland:
Arttu Ruotsalainen (F, Sabres)
Olli Määttä (D, Kings)
Germany:
Tobias Rieder (F, Sabres)
Lean Bergmann (F, Sharks)
Russia:
Mikhail Grigorenko (F, Columbus)
Alexander Barabanov (F, Sharks)
Nikita Zadorov (D, Chicago)
Vladislav Gavrikov (D, Columbus)
Ivan Provorov (D, Flyers)
+ once they get there:
Vladimir Tarasenko (F, Blues)
Dmitri Orlov (D, Capitals)
Ilya Samsonov (G, Capitals)
Slovakia:
Marian Studenic (F, Devils)
Sweden:
Isac Lundeström (F, Ducks)
Rickard Rakell (F, Ducks)
Victor Olofsson (F, Sabres)
Adrian Kempe (F, Kings)
Marcus Sörensen (F, Sharks)
Switzerland:
Philipp Kurashev (F, Chicago)
Timo Meier (F, Sharks)
Nico Hischier (F, Devils)
Jonas Siegenthaler (D, Devils)
+ Reto Berra! (who isn't in the NHL any more obviously)
That leaves Norway, Kazakstan, Latvia, Italy, Britain and Denmark with no NHL players.