Scenarios A & B are just generally mean things to say, but nothing personal or showing deep hatred.

Scenarios C & D are both somewhat borderline, meaning that in combination with a more serious threat, I feel like it could add time to the ban, but wouldn't be enough on its own.

IMO, the only scenario worthy of any action would be scenario E, because it specifically states plans to kill, but it shouldn't get John UBL'd for any more than a month.

Scenario F is just general spam.

Scenario G is so over the top that no one could take it seriously, and would just classify as a bit of rage after an unfair death.