I have a few golden laced wyandottes and I love them!! All Wyandottes are lovely in my eyes, but the silver is the original wyandotte, so maybe everyone has one because they've been variety around the longest? (I think that's right about them being the original wyandotte!)
I have had golden laced Wyandottes before. I got them from a hatchery and they were really bad looking. Nothing to write home about, but they were very good winter layers and that's what I wanted them for.
I am trying to order some now, and he said it might be difficult, so I think they have them at times...it is still a rare variety. Nice birds though! If you do a search on this forum for wyandottes, you'll find some great posts!
I think it might be a matter of trends too... When we got our first Wyandottes all we could find were GLWs, then a few years later we got some SLWs, and today it seems everyone has SLWs and few have GLWs... It also seems to me that a lot of people "moved on" from GLW to BLRW
BTW, from what I've read of their history you're correct in that the SLWs were the originals, then whites originated as SLW sports and GLWs were developed. And then some...