@Momka_art Another small note is the importance of the actual ring on the ring finger
Those rings signify rank within the ring (like the maestro's rings)
I also believe that it having the most unique art style is a reference to the artistic nature of the ring itself
@Momka_art As many others have said, I believe the finger-pointing up like that is to "silence" those who speak out about the prescripts. Aka don't question it
The finger being a blade is likely a reference to the Index and the importance of its personalized swords (mentioned in Ruina)