On my coach which is finished in Cherrywood and Laquer ......I ran across what it was finished in totally by accident. It was marked on the inside of the trim surround for the TV in a bedroom and seen it when I removed the trim piece to install a smart tv.
Dont know if all coaches are all identified in this way ..... just saying
a quick Google
of "Milky wood finish" has a lot of information on the subject.