Yes, the "camp two" is considerably smaller. You may add to that short list the big Micro Seikis, Final Audio, Epic and Melcos of decades past. Than the german Apolyt from the 90ies with so far 15 units built and featuring the most extreme and most expensive approach of this principle. The classic Platine Verdier however does feature eddy-current brake (side effect of its vertical magnetic supported bearing) and is used today by various owners with all kinds of DIY-drives (I have seen idler-wheel driving PVs as well as tape, belt, thread and even transmission belts).
Cheers,
D.
Cheers,
D.