It seems that the 2nd phase of Yukari's spellcard when you fight her in different versions is a bit different. In older versions she goes straight to launching black bullets, where she is more vulnerable, but in newer versions she launches a round of regular bullets first. (Compare my Miko run with others for reference.) I am not sure exactly when this change was made, but it does affect the length of Marisa, Mamizou, and Miko's runs, so I suggest a leaderboard split.

Idk what Diamond thinks, but splitting a leaderboard over 1 second of time save on a version that is easily available sounds dumb to me