Who uses what Class 'd' modules?

I can think of 3 or 4 Class 'd' module makers.
I am just curious as to who makes amps with them?
Is the new Onkyo integrated proprietary or B&O or ???
What about Rotel?
I can think of several makers.
B&O / IR (new player) / Cold Amp / Hypex UcD

I know PSAudio and Bel Canto use B&O but am curious about who uses what else?