Thanks for bearing with me through the downtime and/or late updates. The core issue behind both has (hopefully) been resolved, so things should be stable now.
Card Rarity X X X X
High stat X X X X
  Vocal Visual Dance Balanced
Idol Attribute X X X
  Cute Cool Passion
Skill Type X X X X X X X X X X X
  Perf. Lock* C. Guard Combo Bonus Score Bonus Healer H. Guard Overload All-Round Concen. Skill Boost Focus
Awakened?   X
  Yes No

(Short link)

Click on an underlined table header to sort the table by that value. Do note that you should apply filters before using the skill-based sorts, as you can't really compare skill effects.
Card VoViDa Skill Effect (sort: time window, % chance, duration, effect val.)
Kimura Natsuki
3810 5862 3143
高鳴る熱情 Every 13 seconds: there is a 40..60% chance that you will gain an extra 18% combo bonus for 6..9 seconds.
Tachibana Arisu
4209 4555 4267
こぼれる純心 Every 11 seconds: there is a 40..60% chance that Perfect notes will restore 3 health for 4..6 seconds.
Koshimizu Sachiko
2466 4950 3056
自称・溢れる輝き Every 9 seconds: there is a 35..52.5% chance that Perfect notes will receive a 15% score bonus for 5..7.5 seconds.