I have to ask, are some of these bonus items based on your PC class / race / aligment or other things?
In GoG (if that make difference?)
I have listed as DLC's:
- Red Panda
- Ingame player's portraits
- Pre-order Bonus
- Kickstarter Tier 2

I have (PC) Aldori Defender / Rogue (1/1 when get to the chest) Human LE: 12/16(18)/14/14/10/13

And I get from chest:
Spoiler:


So I wonder if I would get let's say "a signet that allows you to bless your party several times a day, and a belt with bonus disease and fatigue resistance" if I had some other PC / aligment / race?