Hi jfwfeis,
The specs for the Smowmass and the Aspen are in post #9 here.
I normally consider 1" of polyfoam in the upper layers (or quilting) to be “acceptable”. There’s not enough of it to create an impression issue and while it’s not ideal … it’s used to “adjust” the feel of the latex without having to use more expensive latex itself or to “fill out” the quilting to create a certain look or hand feel for the mattress. Once you get to about 2" of polyfoam in the upper layers … then there is enough to create potential issues (depending on the type of polyfoam) and also to significantly affect the performance of the latex as well.
Phoenix