Of the stuff I see on court listener:
* 3 don't have documents available (and I'm not going to bother signing up for PACER just to find out)
* 1 has a claim predicated on "I could have bought or shorted GME" (yeah, not gonna fly)
* 1 has a claim predicated on "the value of GME stock fell, causing me loss" (doesn't mention if the stock was actually sold, so it's purely paper loss, so really not gonna fly)
* 1 has a claim predicated on "I tried to buy, but couldn't" (best chance of succeeding, but I think they're still screwed anyways)
It's a good message board power-up, I guess.
Much of the nice and fast experience that Robinhood offers ("Just signed up? You can start trading!", "Initiated a transfer? Start trading now!", "Just sold something? Rebuy something else immediately!") are all powered by the fact that these are all technical using margin.