This is my list of definite ATG Cricketers in History
Australia
Batsmen - Bradman, G Chappell, Border, S Waugh, Ponting
Fast Bowlers - Lillee, McGrath
Spin Bowlers - O'Reilly, Warne
Wicketkeepers - Gilchrist
England
Allrounders - Botham
Batsmen - Hobbs, Hammond, Hutton
Fast Bowlers - Barnes, Trueman
Keepers - Ames, Knott
India
Allrounders - Dev
Batsmen - Gavaskar, Tendulkar, Dravid
New Zealand
Allrounders - R Hadlee
Pakistan
Allrounders - Imran Khan
Batsmen - Miandad
Fast Bowlers - Waqar Younis, Wasim Akram
South Africa
Allrounders - Jacques Kallis
Fast Bowlers - Steyn
Sri Lanka
Batsmen - Sangakkara
Spin Bowlers - Muralitharan
West Indies
Allrounder - Sobers
Batsmen - Lloyd (also for his Captaincy), Richards, Lara
Fast Bowlers - Garner, Holding, Marshall, Ambrose
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And for the players who are arguably ATG but might not make that elite cut off
Australia
Allrounders - Miller, Benaud
Batsmen - Trumper, Harvey, Hayden
Fast Bowlers - Lindwall, Davidson
Spin Bowlers - Grimmett
Wicketkeepers - Healy
England
Batsmen - W.G Grace, Sutcliffe, Compton, Barrington
Fast Bowlers - Bedser, Tyson
Spin Bowlers - Laker
India
Batsmen - Sehwag
Spin Bowlers - Kumble
New Zealand
Batsmen - M Crowe
South Africa
Allrounder - Procter
Batsmen - G Pollock, Richards, Smith
Fast Bowlers - Donald, S Pollock
West Indies
Allrounder - Constantine
Batsmen - Headley, Worrell, Greenidge
Fast Bowlers - Roberts, Walsh
Possibly biased towards players I never saw but I think if a players name is still remembered decades (or in the case of Grace and Trumper a century) later then that makes them an ATG by definition