hololive Derivative Works Guidelines was updated last August. Apart from updating the list of exceptions, the change is:
For songs by Mori Calliope, Kobo Kanaeru, or Moona Hoshinova, or any song from Blue Journey (a 2023 collab project with EMI Records Japan), search both the JASRAC and NexTone database:
https://www2.jasrac.or.jp/eJwid
https://search.nex-tone.co.jp/terms?0
Each entry has listings about whether JASRAC or NexTone manages the copyright for each category of derivative works. I'm honestly not sure where rhythm game charting falls under. I'll update the post if I figure it out. Anyway, if it says O (they manage the copyright), and the publisher is Universal Music Publishing (ユニバーサル・ミュージック・パブリッシング), you have to contact Universal Music Publishing.
(TODO: what if the publisher is someone else...? Just use it?)
This makes permission check significantly more complicated, so at this point maybe the v9 sheet entry should be replaced with a link to this post lol. I'll merge all the relevant information here later.