I used the search term "Pearl" to find results for PotC1. And considering that movie came out before we knew there could be sequels, many edits/DVD rips might have just referred to the movie as Pirates of the Caribbean so some results may be missing. I am using the search term "chest" for PotC2. Here are the worthy results:
Thread 83047 Four additional tracks for both PotC2 and PotC3. These tracks are still available on Magic Box Music's Virtual Resume
Thread 79042 This was a bundle of everything ripped from Geoff Zanelli's (another additional PotC composer) first website. I believe he posted three additional tracks.
There's, of course, the Resources thread and Isabella's collection which contain info for this film as well.
Thread 91769 Chronologically, in the list of results, this is the first decently expanded score for PotC2. What I did not find anywhere in this list of results is the edit that is commonly referred to as "The Extended Experience". This particular edit appears to be a slight variation on the EE.
Thread 94848 Yet another variation of the Extended Experience, which, I believe, features YouTube rips of DVD rips (a nightmare in terms of quality and a thing referred to as "doing your own work"). Personally, I would just seek out the Extended Experience if I were you--since that's one of the edits that got me started. In the Pirates resources thread, I think you can find my analysis of the sources for all the tracks that were not included on the OST. Still...many new cues have been released in the time since the EE surfaced, but none of the updates of the EE have quite all the new cues.
Thread 112412 This is a bundle of most everything that is available on Geoff Zanelli's new website. Unfortunately for PotC2, he did not post anything new that wasn't on his old website.
Thread 78896 This is the most accurate and extensive edit [that was once] available for PotC2. It features two full discs of music straight from the film plus two more discs full of alternates and soundtrack versions of tracks--utilizing the OST, all music that was available from additional composers (at the time of its posting) as well as DVD audio to fill in the rest of the gaps.
Aside from the Extended Experience, there are two more edits that were fairly important in fulfilling my needs that I cannot find here on the Shrine. One, I think, may have been made available in the time before the EE and I call it the 29-track bootleg. It uses the OST and then it also selects a random group of unreleased music, utilizes only a single rear channel of the DVD audio, clips out certain SFX with no rhyme or reason, and over-amplifies that audio to a point that makes it sound worse than how the OST for PotC1 was mastered.
The other edit originated from our own member Nightmare27, known as uga2 on his blog and elsewhere on the web. I cannot remember the total contents of the edit, but it was my first encounter with actual material extracted from DVD audio (because with the 29-track bootleg, I didn't quite understand yet what I was listening to). He made a selection of the biggest action tracks of the score but utilized only the rear channels of the DVD audio and didn't attempt to equalize volumes between sources.
One more thing: Lorne Balfe has a short cue on his website misnamed "Wheel of Fortune" that I don't think is on any of the above edits. The most likely places it could be are the Extended Experience variations; but considering the timing, it is not so likely.