Since these are all from the same author I always imagined the timeline to be GITS, then Dominion, then Appleseed.

NegativeSoul said:

Since these are all from the same author I always imagined the timeline to be GITS, then Dominion, then Appleseed.

Shiro Masamune more or less says the same in his notes and appendices; except the order is Dominion, GITS, than Appleseed (which is why the Puma Sisters appear in the GITS manga and Stand Alone Complex).