Question

Which Bts members would be categorized as Tenor,Bass,Baritone, or CounterTenor

Answer 1

All of them could qualify, but if you're only talking about the most out of the Vocal line it would be Taehyung

Answer 2

From what I’ve heard from their music and read when researching:

Vocal line: Jimin, Jin and Jungkook are tenors. Taehyung is a baritone.

Rap line: though they rarely “sing”, we could say RM is a baritone also… Hoseok a tenor… Yoongi is difficult, I would say bass, based only on personal perception.

Hope this was useful. Have a nice day!