The collapse of Schwinn goes back to early 1990's. The UAW had attempted organize Schwinn's factory staff under the guise that they should get UAW salaries. Schwinn responded by moving frame production offshore. I don't quite have a year for this, but by 1994 the process of having bike built offshore proved to be too big to manage, and Schwinn fell apart. The Schwinn family (may just be Richard Schwinn) sold off everything but the Waterford factory in which high end Paramounts had been built.
The Waterford factory became Waterford Bikes, although they are somehow licensed to make frame repairs to Paramounts. Scott was the initial purchaser of Schwinn, which may have been just the name. It has changed hands several time since then. For all practical purposes, the Schwinn we all loved ceased in 1995. Gunnar fits in there somewhere, but I don't quite understand the business model for Gunnar.
I have a 1992 Paramount Series 3. She has a lugged frame, braised in Japan, so she is not a Waterford Paramount. Still an excellent bike, and gorgeous to look at. A lucky purchase by me, as I did not know enough back then to appreciate what I bought. I have replaced everything on her several times. I lucked out in that the 126 MM rear dropouts flex enough to accommodate a 9 speed hub. Waterford will modify the frame to have 130 MM dropouts, but that would be really expensive.
As far as I know, the only place to get a lugged frame is Waterford. Waterford make lugged frames for Rivendell. I have a Waterford lugged built Adventure Cycle tour bike now. Just as pretty as my Paramount.