Just because some artists are still going, doesn't mean young people would have heard off them. Like I wouldn't have heard off a lot off music artists, reality stars etc from today.
Not from growing up but I was shocked my Niece hadn't heard off Will Young when I was off to see him in concert, then realised she was one when he won pop idol!
Here's some I can think off from my childhood.
Mr Motivator
Rusty Lee
Timmy Mallet
Duran Duran
Tony Hadley
Nik Kershaw
Brian Clough
Paul Daniels
Brooke Shields
Hulk Hogan
Kim Wilde
Wincy Willis
Sean Penn
Nick Berry
Gaz Top