Where did you find that list for the 7.1 titles? It's getting better, for sure. When I bought a 7.1 receiver about 5 years ago, I wasn't as "into HT" as I am now, so I was surprised by the lack of true 7.1 content.
Now, like I said, finding a true 7.1 that is WORTH WATCHING is the hard part
But you did list a few good examples and I know of a few more out there.
Statistics Page - Blu-rayStats.com
I liked Pan's, and enjoy some other del Toro works, but it's the video that is a travesty, it probably has the worst DNR of my entire collection. It was one of my first BD purchases, and I thought I had a PJ issue with white crush or something (this stuff was all new to me 5 years ago or whenever it was). Other titles that may be even worse, which I've never watched on BD, are Patton and the first release of Gangs of New York (yes, it took little time for the 2nd release; that's how bad the 1st one was). I avoided Gladiator, Silence of the Lambs, and Shawshank Redemption for similar reasons, and a couple of those are all time favs. But enough of the video side of things, when Pan's is mentioned I can't help it. (Cronos is somewhere down my Netflix queue, it's something that's been in the back of my mind to watch, even though it probably suffers pretty badly too.)
Sometimes there is a 7.1 track for no apparent reason whatsoever, I think it was the first season of Weeds that had that, but what for, I have no idea.
So now I realize Tintin, Finding Nemo, Kung Fu Panda 2, and Cars 2 all had 7.1. Good ol' cartoons.
Looks like there is at least some classical music in 7.1. I don't think any of mine are however, almost always 5.1 PCM, though my Beethoven Piano Concertos are DTS-MA instead.
Hm I looked up the Bach Orchestral Suites recorded in 7.1, and red alarms are going off, I'm pretty sure there is some important reason to avoid the "Acoustic Reality Experience" stuff. Can't remember why though.