miami bass was mid to late 80's and a regional take on the electro sound, la had an electro bass sound as well, as did new york, but the sound of miami was more or less the sound of miami hip hop if you get me.
the detroit bass or electro bass was more 90's and isn't as mc led at all it's club music, course that came more or less from a mixture of the ghetto house trax from chicago etc, ie the music getting faster and dirtier and detroit techno and electro plus big handfulls of classic detroit funk and electro funk sped up.
crunk is an atlanta thing no, much later than either and probably more or less a mixture of chopped and screwed. southern shit and tempos and also samples in hip hop not really being the fashion anymore.
so if you like detroit, miami have their roots in electro
duke/ghetto house and to an extent baltimore stuff has its roots more in house.
dunno enough about southern hip hop to really get busy on that.