My first cruncher was a Cyrix 6x86 P150+ (technically IBM; that's why it survived for five years) doing Proth. But that was before I knew about TA. In fact, I don't think TA existed in July 1997, did it? I was assimilating machines at work while you were still in diapers!
I don't remember CSC, and I wasn't around for the WarpCore or Mika's original domain (though I think three cows that flush to the dhs.org domain are mothballed at my old high school). But other than that, I remember everything on the list.
And by the way, I don't think I ever mentioned this to anyone, but the day before DCypher announced they would do Gamma Flux, I had sent e-mail to the guy in charge of the project, that DCypher was looking for projects. His server was firewalled off, so he couldn't get any work done.
P.S. I don't remember that well, but I think there was only one OGR PTE. Most were RC5.
Here's a question: Does anyone remember the name of the first page hosting the Gamma Flux project?