Bands which didn't revolve around the singer

 Tony Iommi was pretty much the boss of Black Sabbath

Steve Harris is Iron Maiden’s main man

Ritchie Blackmore was definitely the go-to guy in Rainbow

And Johnny Faslane for Cold Steel, who’s not even in the band, he’s their manager.

Cold Steel on the Rocks

We Are Cold Steel

Cold Steel and the Underground Boneyard

It's Not For Everyone