Oh boy, it’s a bit of a shame you put in the stipulation that the people have to be living.
Vocals - I like a lot of different styles, so I’ll have to include several categories here. And to make it work, I’ll pretend they do some sort of vocal stylization like Ayreon or Into Eternity.
Lead Vocals: Warrel Dane - My favorite singer, hands down
Baritone: Dan Swano (HM: Eric Clayton)
Tenor: Fabio Lione (HM: Russell Allen)
Soprano: Anneke van Giersbergen (HM: Marcela Alejandra Bovio García)
Growler: Paul Kuhr (HM: Pasi Koskinen)
Screecher: “Shagrath” Stian Tomt Thoresen (HM: “Garm” Kristoffer Rygg)
Guitar: Jeff Loomis, Joe Satriani (HM: “Tchort” Terje Vik Schei, Mikael Akerfeldt)
Bass: Johan DeFarfalla (HM: Jim Sheppard) - would be Cliff Burton, but he’s dead
Drums: Van Williams (HM: Martin Mendez, Pasi Pasanen) - would be Steve MacDonald, but he’s dead
Keys: Steinar Sverd Johnsen (HM: Alex Staropoli, Michael Pinnella, Janne Viljami Wirman)