There is no list that I think anybody ever compiled of which resorts are always included and always excluded. It keeps changing. Even the dates of the offer keep changing. Fort Wilderness campsites were never included. These turn up on Google searching.
For my own curiosity, 2014 exclusions are Fort Wilderness campsites, AOA Little Mermaid, Port Orleans (both FQ and Riverside), All Star Movies, all three-bedroom villas and Villas at Grand Floridian.
Last year for the late fall offer (this year there was no late fall offer, all dates for September - December were released at once) the exclusions were Fort Wilderness campsites, AOA (apparently all of it), All Star Movies, POFQ, all three-bedroom villas, and Villas at Grand Floridian (which had just opened).
September offer 2013 - excluded were Fort Wilderness campsites, AOA Little Mermaid and 3-bedroom villas.
2012 late fall offer - Fort Wilderness campsites and AOA Little Mermaid were excluded. There's not anything written for 2012 or prior about the 3 bedroom villas.
2012 September offer and all offers before that - only Fort Wilderness campsites were excluded.
This was just for the general public offer - I believe free dining access to everything except Little Mermaid, Fort Wilderness campsites and 3 bedroom villas has been offered to selected guests via PIN code even though they were excluded from the general public offer.