No particular order
ryo -- baroque / kannivalism -- but I have to qualify it: 2001~2013 ? Around kizuna was when I started noticing a distinct change in his style of change. It's not that it's bad, it's that there's nothing unique about the way he sings now. HaL -- Minus Jin-Say Orchestra -- he may not be the best, but the emotion he puts into it... Well, let's just say he's the only vocalist that's come even close to making me cry just by singing alone (you know, with no outside circumstance like it being a last live or anything like that). Kazuki -- Belmosaic / XAA-XAA -- His voice is what drew me into Belmosaic to start and it is still one of my favorite things about XAA-XAA. I like his deeper voice and how well it fits with some of the two bands' jazzier songs Shuuji - cali gari -- need i say more? nigu -- cocklobin Tsubaki -- 8-eit
If I were to talk about frontmen--as in how they perform on stage etc--then I would have to add a few others to the list: Buu from Ensoku, Reno from Cradle (not a great vocalist, but a great frontman), Issei from BugLug.