Suggestions by @andrewlaposha

Rita Coolidge

as Panelist #4 in The Masked Singer Season 3 (1974)

Score: +1

Charles Nelson Reilly

as Panelist #3 in The Masked Singer Season 3 (1974)

Score: +1

Joyce Brothers

as Panelist #2 in The Masked Singer Season 3 (1974)

Score: +1

Steve Lawrence

as Panelist #1 in The Masked Singer Season 3 (1974)

Score: +1

Dick Clark

as Host in The Masked Singer Season 3 (1974)

Score: +1

Mary Wilson

as Butterfly in The Masked Singer Season 2 (1973)

Score: +1

Ben Vereen

as Fox in The Masked Singer Season 2 (1973)

Score: +1

LaWanda Page

as Penguin in The Masked Singer Season 2 (1973)

Score: +1

Susan Dey

as Flamingo in The Masked Singer Season 2 (1973)

Score: +2

Mark Spitz

as Egg in The Masked Singer Season 2 (1973)

Score: +1

Althea Gibson

as Panda in The Masked Singer Season 2 (1973)

Score: +1

Ron Howard

as Ice Cream in The Masked Singer Season 2 (1973)

Score: +1

David Reuben

as Eagle in The Masked Singer Season 2 (1973)

Score: +1

Phyllis Diller

as Tree in The Masked Singer Season 2 (1973)

Score: +1

Pearl Bailey

as Flower in The Masked Singer Season 2 (1973)

Score: +1

Muhammad Ali

as Thingamajig in The Masked Singer Season 2 (1973)

Score: +1

Doc Severinsen

as Skeleton in The Masked Singer Season 2 (1973)

Score: +1

Tommy James

as Rottweiler in The Masked Singer Season 2 (1973)

Score: +1

Lucie Arnaz

as Ladybug in The Masked Singer Season 2 (1973)

Score: +1

Harry Belafonte

as Leopard in The Masked Singer Season 2 (1973)

Score: +1