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.)
Ooishi Izumi
ニューウェーブ・ネイビー
3249 5873 3903
見守るブレイン Every 9 seconds: there is a 40..60% chance that Bad/Nice/Great notes will become Perfect notes for 3..4.5 seconds.
Nagatomi Hasumi
コール・ミー・メイビー
3838 3658 3622
カインドネス Every 6 seconds: there is a 35..52.5% chance that Perfect notes will receive a 15% score bonus for 3..4.5 seconds.