Confirmed to have pro drums in this thread: http://dlcquickplay.com/forum.php?t=5884
They don't actually belong on the list, however, because you can't buy them in the Rock Band store and the original, downloadable versions don't have pro drums or guitar. They are technically RB3 versions.
I also just realized that the Hourcast songs weren't on my list and that the forum editing bug probably ate that post. It probably ate a few other edits as well. Great.