I don't believe there is a list...and it's probably drifted over time.
It's been the experience of many that Federal makes the softest cup on the market, bar none. CCI has always had a reputation of a very hard cup.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.