As a start, you can do a component based IS schedule and sort by core. You would still have to export to a spreadsheet to get the total core thickness if your core is defined by more than one skin as in the examples shown.
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
"Implementing Successful Building Information Modeling"