Sorted by their debut decades but may prefer albums from later decades

10s

• Ferri
• Shishido Kavka
• Natsume Mito
• Mariya Nishiuchi
• old BiS
• You Kikkawa
• DAOKO
• arai tasuku
• Seiko Oomori (temporarily dead to me)

00s

• Jasmine (dead until the new album comes out)
• Miliyah Kato (dead until the utopia mess clears out)
• Mika Nakashima
• Maki Goto
• EMI MARIA (peaked in 10s though)
• MEG + capsule (love MEG's non-Nakata material too)
• Salyu
• Thelma Aoyama
• Yoriko Ichinomiya
• anison / video game singers and groups like Kalafina, Eiko Shimamiya, Akiko Shikata, Kanako Itou, Aya Hirano etc.

90s

• Hikaru Utada
• Namie Amuro (dead to me now)
• Ringo Shiina (died in 2015 RIP)
• Olivia
• maybe the eccentric opera / the original dream

80s

• Akina Nakamori
• Chisato Moritaka
• Shizuka Kudo
• Jun Togawa
• Syoko + G-Schmitt

70s and earlier

• Douji Morita
• Rajie
• Chiyo Okumura
• Carmen Maki
• erotic albums