Having lived in most of those cities and in Miami I can say Miami is definitely the most dangerous driving I've seen. And my car insurance company certainly seems to agree.
Not to mention The Ticket Clinic, a private service to pay a small fee to get out of traffic court. I probably had 10 different traffic violations thrown out, for $80 a pop, when I grew up there in the 00's.
I currently live in Miami. I've lived all over the country. I'm from NYC burbs. I thought NYC drivers sucked before I moved here almost a decade ago.
Miami's drivers are horrible, mostly because most of the people here have never been trained to actually drive.