I'm not very picky and into music from almost every Japanese music sub-scene, but as a turbozoomer I've mostly been listening to new releases from active and rookie artists on the rise.
Net creators / Vocaloid
Yorushika, HarumakiGohan, PinocchioP, Nanawoakari
singer-songwriters (pop, rock, R&B, jazz, folk,tronica)
Fujii Kaze, Zutomayo, Kaneko Ayano, Mom, Kimishima Ohzora, Hasegawa Hakushi, Okada Takuro, kiki vivi lily
EDM/track makers
Tomggg, yuigot, Yunomi, Yaffle, imai (group_inou), Sasaki Kissa, De De Mouse, Lucky Kilimanjaro
Rock
The Novembers, Chai, People 1, Soutaiseiriron, Ging Nang Boyz
Hip-hop
Daoko, Manon, Kid Fresino, 4s4ki
Misc
femme fetale, CY8ER (idols)
Pinky Pop Hepburn & Luna Kaguya (retired vtubers)
Denonbu (Bandai Namco character anime "idol" franchise about electronic music, similar to Idolmaster or Bandori)