Seems to be a bit of a trend that when former players are asked to name an ATG XI they usually favour the players that they encountered personally. Here's Allan Donald's all-time XI.
Matthew Hayden (Australia), Justin Langer (Australia), Jacques Kallis (South Africa), Brian Lara (West Indies), Sir Viv Richards (West Indies – captain), AB de Villiers (South Africa), Adam Gilchrist (Australia – wicketkeeper), Shane Warne (Australia), Malcolm Marshall (West Indies), Curtly Ambrose (West Indies), Glenn McGrath (Australia)