Well the two guys who've proved themselves internationally there are Kronwall and Mårtensson. Kronwall was the captain last year and Mårtensson has retired. Andersén has been a regular this year, Thörnberg is usually a regular when healthy and Viklund is Mårts' baby boy.
Most of the forwards on that list have been on the national team plenty of times with varying success. Speaking generally, they were good but not dominant SHL players, or recently came home from failed tenures in NA and went straight to Russia. Videll, Gynge and Bergfors don't have what it takes to be WCH top6 players. They're certainly around but not above the level of SHL forwards like Arlbrant, Möller and Klasen. Zackrisson, Ullström and Engqvist are probably more interesting because of their ability to be strong checkers.
But long story short, there are no unknowns in the KHL that we haven't tried out or aren't on the team regularly.