This Mishna seems to be laying out a framework for all of Bava Kama, which is interesting. It's interesting because of the ambition, but the Gemara seems to play along.

Why draw attention to the similarities if the immediate following paragraphs only discuss things which differ? Each subcategory remains separate, and I'm not sure I get it.

This the core of this Daf, perhaps the whole Mishna. Possibly even setting the structure likely for the whole masekhet.

https://mitpressonpubpub.mitpress.mit.edu/pub/syyor4ra/release/1?readingCollection=31668090

From Chapter 3 of Remi Kalir and Antero Garcia's book Annotation.

I've referenced this image so many times, I ought to finally bookmark it, right?

Ted Nelson shows a similar one when talking about Project Xanadu and the importance of parallel texts.

Surprisingly, these have only been recently aggregated online at Sefaria a story delineated here: https://www.washingtonpost.com/religion/2018/09/18/quest-put-talmud-online/

Embedded reference to Talmudic traditions?

In some non-trivial ways, this might be key to how people have defined “scholars”, including religious ones.