I think predatory is a key distinction here. Obviously all hits are to force the puck carrier to lose it, but do hits where they deliberately target someone to absolutely blow them up not count as predatory?
For example, Trouba's hit on Dal Colle. It was beautiful, an absolute bomb of a hit but I generally think of hits like that when I think of predatory. I know there's a diff between Raffi Torres sending Hossa to the hospital when his back was turned but a hit can be "clean" and be a deliberate attempt to send a player to the moon at the same time. Euro leagues tend to not really differentiate between the two.....evidenced by Hoglander and Edstroms suspensions.
I'm decently close with the Klecko family (switching sports, I know). Joe Klecko once told me that when he hit people he wanted to
hurt them; but then he very quickly clarified that he didn't want to
injure anyone. He said he wanted to hit the QB, so when the QB got up, he said, "f*** me, I am going to be in horrible pain tomorrow." And honestly I think in a contact sport, that's a fair approach. If you can hit people, it's fair to go in hoping to hurt them, just not hoping to injure them.
In hockey, if you chicken wing someone, or drive them into the boards from behind, or approach someone from the blindside and clean them out, etc., those things to me are predatory and either have a direct intent to injure, or are reckless enough that an injury would reasonably be expected. When Lindgren damn near killed Donskoi, he did it right--came from straight on, drove into the body, and caught the head as a result of the position Donskoi had put him in. Donskoi made himself vulnerable and Lindgren made him pay. That's a scary hit and it sucks that Donskoi was concussed or whatever but it was a clean hit.
Edstrom was similar. Guy wasn't expecting it because he had been engaged with a different player, Edstrom comes in, his shoulder and arm go into the other guy's upper body, dude gets wrecked. Didn't look like he went for the head, I don't really think he threw his arm out (if it came out, it was that natural thing that happens after contact at high speeds), all in all it seemed mostly fine. I don't know. You can maybe criticize him, like Lindgren, for hitting a guy as the "third man" so to speak, but that's about it for me.
That said, when Shesterkin got that game misconduct
and suspension for tripping, that was the dumbest thing I had seen. Apparently it was correct by the rules, though. I know the NHL rules but not the rules of all the other leagues and the IIHF. So, it is what it is I guess. And I do commend the other leagues for taking a hard stance on violent hits to the head; I just think sometimes they're a bit over-zealous.