I saw this in another answer
there are considered to be only seven or so actual plots anyway
Is this true? Is it like plots are generalized into a couple of types or forms? Where can I read more about this?
It is true to a point. As you suggest, they are generalized form encapsulations of conflict. In other words, they are archetypes. Similarly, you will hear folks say there are only 32 plots at times, too. The number varies. Often one will be more popular than others for a while.
Understanding them can be helpful at times if you're studying story and story story structure.
Wikipedia has a nice summary of the seven basic plots. The resources and external links at the bottom might lead to other helpful articles. I didn't follow them.
When I took an SF writing class from Joe Haldeman, he said there was only one basic plot: Trouble.
This site has lists of 3,7,20, and 36 respectively
I will post the list of 7 here:
"7 basic plots as remembered from second grade by IPL volunteer librarian Jessamyn West: