Trainwreck, Dumble ODS, Cornford, Suhr Badger 35 and PT-100SE, more. He's apparently putting out one demo video a day until Oct 10, when the whole package gets released.
Patches and some more of his custom "tone match" IRs are included.
More info at the top of the Helix section on his Patch Downloads page. There's a link to a patch list PDF, and one to a video, other vids I think you have to find on YouTube as by him.
I'm not familiar enough with any of those amps to judge their accuracy, besides of which I'm just some guy, who cares what I think, but they seemed cool in general. Slightly edgier top end than the original clips he has at the start of each vid, and maybe not as different texture from each other as the originals, but still fun and useful I'd bet.
Actually I lied, I did have a blackface Bassman back in the day, sure didn't sound like Geln's version originally. For better or worse, I had it mod'd by Dawk Stillwell, KT88 output tubes, bigger output transformer, yadda, then it was more of a firebreather, but it was always great.
Matching some original I can't afford and will never play isn't the point for me anyway, just finding cool sounds and patch construction ideas.
Props to Glen for all he does too.