To be completely honest, Dave, I am struggling to answer the points you raised. Clearly you have greater knowledge, indeed even specialist, so I can only hope you work/have worked for Ferodo perhaps.
I cannot unearth the article where I read that single pressing gives a more consistent pressing. The article stated that a batch pressing could be less consistent, presumably due to perhaps not homogeneous pad material mixture, variation in pressure of a press doing say 20 pucks at a time. Certain motorsport applications will be very low volume so will surely be single pressings. Are they inferior to mass production that way?
I thought all pads were multi cavity.
Curing? The Ferodo footage and EBC, perhaps the Akebono seem to oven cure for a few hours. Other sources seem to heated pressure plate cure the pads. All other sources seem to use heat and pressure. The Ferodo footage is a bit older though so perhaps there are now more cost effective techniques.
Not the most scientific but interesting.
I think Remsa make for various brands.
I'm not sure if Apec make their own stuff or simply box it.
A non- scientific look at Borg & Beck who contract manufacturers to produce for them.
As said, I cannot find what I was looking for but if anyone can post supporting links one way or another, that would be useful. My intention is not to mislead anyone.