One type of foam
We did some testing on the difference between foam and rockwool
gas flow resistivity of foam products range from around 5kPa*s/m² to 12kPa*s/m²(caruso isobond wlg 35).
I have seen another test with different results, probably due to different type of foam? Acoustics Forum • View topic - Corner Absorption Comparision test
regarding the original qestion, need to know gas flow resistivity, an estimated guess is that it is best to make seperate traps, thick traps when using the auralex, 10 inches or more.
As for roxul/owens corning, lots of info on the forum.