One is made of a dense rubber like material (at least the ones I've seen in Lange boots), which I'm assuming is the one in the video. Marketed as absorbing more impact and shock, used in FT/K2 Flex and some 'all mountain' category boots.
The other is made of a much lighter and firmer, almost brittle like material. Honestly feels quite flimsy and reminds me of styrofoam. Can confirm the 2024 Il Moro Pros I ordered came with only this one and not the above 'shock absorbing' one. Was also missing the blocco flex inserts. Combined with the fact the new fit doesn't work for my feet any more, sadly, it appears I'll be moving on from Dalbello once my Krypton 130s are done, unless they go back to the previous last in the distant future.