I'll try dividing them by types/genres.
If you like slow or mellow songs, go with Namida no Regret, BURN, One Piece, or Switch.
If you want "nyenyenyenyanyanya" kind of songs, listen to Taiyou Scandalous, Happy Collector, Koshi Tantan, or Sparkling.
If you want a somewhat hard rock, get Hi Hi Hi, Queens are Trumps, OSAKA, or Kagerou.
If you want typical Scandal rock songs (woah, and this is going to be A LOT), go with the following:
- Hello! Hello!
- Everybody Say Yeah!
- Love Survive
- ROCK'N ROLL
- Shining Sun
- S.L. Magic
- Welcome Home
- Pin Heel Surfer
- Right Here
- SCANDAL BABY
- Taiyou to Kimi ga Egaku STORY
And on top of it, Shunkan Sentimental.