I’m probably missing a lot but...

Wellens
Vainikolo
Hape
Lyon
Hall
Briers
Long
Graham
Cunningham
Morley
Peacock
Sculthorpe
Sinfield

Slater
Sailor
Inglis
Lyon
Ettingshausen
Lockyer
Johns
Lazerus
Steve Walters
Webke
Tallis
Menzies
Fittler

Walters or any modern hooker before Cam Smith? Nah.

true best hooker ever for me

He's definitely the best of the modern era, although hooker is probably the position that's changed the most in the modern era along with the full back, so it's hard to say how a modern hooker would go 40 years ago, or vice versa.

Steve Walters at his peak had the edge over Cameron Smith IMO. Smith probably played at the top of his game for longer but for a few years Walters was a truly magnificent hooker. Watch the 2nd/3rd tests of 94 to see what he could do. He tore GB apart.