Kahneman and Tversky originally identified three general purpose heuristics: availability, representativeness and anchoring and adjustment.

The following taxonomy is derived from:
page 17 of "Introduction - Heristics and Biases: Then and Now", written by Thomas Gilovich and Dale Griffin
In: Heuristics and Biases: The Psychology of Intuitive Judgment, Edited by Thomas Gilovich, Dale Griffin and Daniel Kahneman, 2002.

General purpose heuristics: Special purpose heuristics: Old (now superseded) heuristics: