I moved this guide to the Guides page. I also made several updates, corrections, and additions; I feel that the new version is accurate and complete enough that I will likely not update it without receiving some feedback. Therefore, I will leave this thread open so people can give feedback if they have any.

I read your "SPEEDRUNNING GUIDE: RUN CATEGORIES AND ROUTING".

It is possible that one or more rivals never spawn on the A track.

I heard that Silver Angel (Rings) never spawns there. Source: https://medaka.5ch.net/test/read.cgi/gameover/1644853940/l50

In my experience, she is the only rival who never spawn on the A track.