Andy LaRocque (King Diamond, Death, etc)
Antonio "Schaffer who??" Garcia (Shah)
Matheos/Arduini (Fates Warning's early days)
Tipton/Downing (Priest)
Smith/Murray (Maiden)
Holt/Hunlot (Exodus)
Uwe Lewis (Grave Digger, Rebeillion)
Chris Broderick (Jag Panzer)
Robert Vigna (Immolation)
James Murphy (Testament, Death, Cancer, Obituary, Hallows Eve, etc.)
Mille Petrozza (Kreator)
Kurdt Vanderhoof (Metal Church)
Tony Iommi (Black Sabbath)
Frank "Blackfire" Gosdzik (Sodom, Kreator)
Ritchie Blackmore (Deep Purple, Rainbow, Blackmore's Night)
There are plently more that I'm forgetting.