I am an attorney, but I haven’t studied for the bar in a while…
All criminal laws are statutory, and most crimes are state-level, meaning there can be variations from jurisdiction to jurisdiction.
However, AFAIK basically every state is very similar with murder/manslaughter.
Murder 1 is what you think of; premeditation to kill another person.
Murder 2 is when you intend to kill the person, but it wasn’t necessarily premeditated (think, escalation of a bar fight and then pulling a gun or knife or something; you intended to stab/shoot, but didn’t go to the bar intending to kill someone).
Manslaughter is when you kill somebody but didn’t have the intent to kill them. Drunk driving is a pretty frequent example.
Some states also have “depraved heart murder,” which is basically where the actions weren’t necessarily intended to kill someone, but it is SO dangerous that any reasonable person would know they are almost certainly going to kill someone. There was an old case (don’t remember the name) where some young adults were going to a highway overpass and basically shoving boulders/big rocks over the edge onto the road, and killed someone driving by. Technically they weren’t intending to kill someone, but it was SO STUPID that it was a murder charge. Most of the time, drunk driving accidents don’t rise to depraved heart murder, but they CAN rise to that level, for example, if there’s a history of multiple DUIs or other specific facts.
There is also felony murder; this is when you kill someone during the carrying out of a violent/dangerous felony (robbery, kidnapping, arson, that kind of thing).
Just out of curiosity would getting in a bar fight, punching a guy and he falls back and hits his head on the ground and dies, would that cover the depraved heart murder?