Well aficionados, as much as we liked those decades, it's time to move on to the 70's, and examine that decade in detail.
There was a problem that began in the 70's, and continued on until this very day; "Is it is, or is it ain't jazz"? I might like this music, and that music; whether or not they are both jazz, I'll leave to the "jazz identifiers". While "Wikipedia" might consider them both jazz, some aficionados wont.
I'm going to begin this discussion with two artists whose music is clearly jazz. "Gato" ushered in the 70's with a new sound that blended South America with modern jazz. Grover Washington Junior came on the scene like a blinding light; while some nit picking aficionados found fault with Grover's music because he was too popular, it suited me just fine.
Let us begin with Gato; I have most of his records from 69 on into the present, and "The Third World" was the first album I acquired; it sounds like the title.
https://www.youtube.com/watch?v=pp5XcEi8cvcI began with Grover in 1970, and continued buying his albums all the way until his death. Let me began with "Inner City Blues"
https://www.youtube.com/watch?v=QLncRYHH4qIEnjoy the music.