Anybody happen to have any details on the bolded component?

2021/22 Upper Deck Black Diamond CDD Exclusive Hockey Hobby Box

Each Box contains One Autograph or Diamond Relic Card, One Base Set or Base Set - Pure Black Parallel (#'d to 50) Card, One Exquisite Card, and Three Regular Insert, Tech and/or Non-Auto/Diamond Relic Memorabilia Cards!

Each Box contains ONE EXCLUSIVE 2011/12 Retro Rookie Gem, Sapphire Diamond Relic Rookies, OR Sapphire Gemography Card!


I've seen these around and actually just got this Cole Caufield /99 yesterday but I've never seen a checklist for the CDD Exclusive cards.


I don't believe that they're in the Inventory, but I could be wrong broadly speaking, though the Caufield doesn't appear. @Mr. M's Cards? Any insight?