@amyhoy Given your focus and research, perhaps this is the best page for you to start with in regard to the IndieWeb? https://indieweb.org/lost_infrastructure
Perhaps even more apropos on this thread as the chart was created in response to an @anildash post.
There are also some history specific pages like https://indieweb.org/history which may be useful to you.
If you have questions, I and others are happy to help!