I think my knowledge of music theory is rooted in jazz theory, and a lot of the writers of standards - Rodgers and Hart, and Gershwin.
Nothing was a style first. Everything started as an idea. A guy did something with an idea. Someone copied him. Some copied all of them and it became trendy and then it became a style.
Again, as egotistical as I am, as self-centered as I am, and as much as I love strangers idolizing me, I find it very crass to be self-promoter in a way.