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
  SSR SR R N
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.)
Himekawa Yuki
レッツゴー☆パレード
5962 3178 3858
ホームインフラッグ Every 11 seconds: there is a 40..60% chance that with only Passion idols on the team, Perfect notes will receive a 16% score bonus, and you will gain an extra 14% combo bonus for 5..7.5 seconds.
Shirasaka Koume
ヨモスガラ・パーティー
3869 3195 5941
イッショニアソボウ Every 6 seconds: there is a 35..52.5% chance that 9 life will be consumed, then: Perfect notes receive a 18% score bonus, and Nice/Bad notes will not break combo for 3..4.5 seconds.
Koga Koharu
ふかふかプリンセス
2580 4951 3155
はなまる☆スマイル Every 7 seconds: there is a 40..60% chance that Nice/Great notes will become Perfect notes for 2..3 seconds.