Yeah.
Guys like Wolverine and Punisher have generally applied less discretion in taking lives than Brock. They haven't generally killed innocent people (Wolverine has though..a number of times under mind control and the likes) but they apply lethal force without much hesitation. In the past, Wolverine didn't really kill when he didn't have to (that was when he could actually be killed) but in recent times, he cuts people up without much. Admittedly I'm not so up to date on my X-men reading (i'm still wading through X of Swords) but he's still in the X-force team which is the only team sanctioned by the X-men to use lethal force.
Venom used to do a lot of trash talk but not actually follow through with the whole "eat your brains" thing.
Sabretooth isn't just a killer....he's also a rapist. I suspect that's why he was buried..literally at the beginning of Hickman's X-men run. Loeb made the character irredeemable despite Remender's best efforts.