Fascinating once again, and a great list that fits your purpose admirably..

It seems to me that most of these songs fall into one of several categories:

1. You Had to Be There (limited appeal beyond a few pop characteristics (e.g. slightly catchy melody but not much else--The Ventures).

2. Solidly crafted pop--good back then, still listenable today: “Chain of Fools,” “Wouldn’t It Be Nice,” “The Letter,” “Everyday People.”

3. Iconic masterpieces ("Dock of the Bay" of course, "For What It's Worth").

4. Everything / anything else (Badge," "All I Really Want to Do").