Actually, the Blend shares the same core as the Celebrity. The regular Chronic has a heavier, stiffer core, but the Blend does not.
Check out the Line Skis website for details, it says that the Chronic core is maple while the Blend and Celebrity are poplar. In fact, after reading the site, I can't find any difference between the Blend and the Celebrity other than the length...
the Shadow has the same core but with no carbon for lighter weight and softer flex if that is what you're looking for.
...on a side note, the Celebrity graphic are terrible