SNSD: It's between Taeyeon and Jessica. RED VELVET: Wendy. BLACKPINK: Jennie. TWICE: Nayeon. GFRIEND: Yuju And Eunha. OH MY GIRL: ---------- (G)I-DLE: Soyeon. LOONA: -------------
GF=Yuju Twice=Nayeon or Jihyo...probably Nayeon. BP=Rose RV=Don't really know to be honest. SNSD=Taeyeon
SNSD: Taeyeon, Jessica Red Velvet: Seulgi, Wendy Blackpink: Rose Twice: Nayeon (G)I-DLE: Soyeon EXO: Baekhyun, Kyungsoo NCT: Taeyong, Doyoung, Haechan BTS: Jungkook TXT: Taehyun Super Junior: Kyuhyun
SNSD: Taeyeon, Jessica, and Tiffany T-ara: Eunjung Girl's Day: Minah Twice: Nayeon Blackpink: don't kill me but Jennie and Rosé Idle: Soyeon (same reason as Jennie) miyeon RV: SeulWen
SNSD: Literally Taeyeon RED VELVET: Wendy BLACKPINK: Rosé is the flavor of every BP songs TWICE: Nayeon and Jihyo GFRIEND: Yuju GIDLE: Soyeon always comes in my mind whenever I hear Gidle songs.
Oh My Girl: Yooa/Binnie Loona: Kim Lip- like Chuu is main, but when you hear Lip's voice, it feels like a Loona song, idk how else to describe it lol. ITZY: Yeji NCT 127: Taeyong NCT Dream: Haechan EXO: Kyungsoo Twice: Nayeon (G)I-dle: Soyeon Blackpink: Jennie/Rose Red Velvet: Seulgi- once again like Loona, Wendy is main, but Seulgi is THE voice that defines their sound imo.
SNSD: Tiffany Red Velvet: Seulgi Blackpink: Rose Twice: Nayeon Gfriend: Yuju Oh My Girl: Seunghee Gidle: Minnie Loona: Chu Itzy: Lia Apink: Eunji Dreamcatcher: Siyeon CLC: Seunghee After School: Raina Sistar: Hyolyn Secret: Hyosung WJSN: Yeonjung
Seventeen: DK Blackpink: Rosé Twice: Nayeon Bts: Jungkook Red Velvet: Yeri Izone: Yuri Gfriend: Yuju Mamamoo: Moonbyul Gidle- Soyeon
Honestly for Red Velvet it's all of them. The most unique thing about Red Velvet's vocals from a technical standpoint is how tight and crunchy their harmonies are. Which is achieved by all of the members having unique but similar voices.
Snsd: Taeyeon for strength and feminism and Jessica for femininity. Red Velvet: Wendy for strength and Seulgi for versatility and adlibs. Black Pink: Rose