Anybody try these materials for DMLs?

I was just looking for possible materials to use for DMLs at my local Home Depot. I spotted these. Anyone ever try making a DML out of any of these materials? What were the results? All are links.

DUROSPAN GPS R5 4 ft. x 8 ft. x 1.06-inch Graphite-Enhanced Expandable Polystyrene Insulation Board

SilveRboard 24-inch x 1-inch x 48-inch R5 Radiant Acoustic Insulation

3/4" EPS Rigid Insulation

1/2" Rigid XPS Insulation

3/8" or 1/2" Drywall?

What other interesting/different materials have you tried and what were the results?
 
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