Hickory: DLC names and numbers:
01 - Temerian Armour [setup_the_witcher3_dlc1_2.0.0.28.exe]
02 - Beard and Hairstyle Set [setup_the_witcher3_dlc2_2.0.0.28.exe]
03 - New Contract - Missing Miners [setup_the_witcher3_dlc3_2.0.0.30.exe]
04 - Alternative Look For Yennefer [setup_the_witcher3_dlc4_2.0.0.30.exe]
05 - Nilfgaardian Armour Set [setup_the_witcher3_dlc5_2.0.0.30.exe]
06 - Crossbow Set [setup_the_witcher3_dlc6_2.0.0.30.exe]
07 - Fool's Gold [setup_the_witcher3_dlc7_2.0.0.32.exe]
08 - Ballad Heroes - Neutral GWENT set [setup_the_witcher3_dlc8_2.0.0.32.exe]
09 - Alternative Look For Triss [setup_the_witcher3_dlc9_2.0.0.33.exe]
10 - Scavenger Hunt - Wolf School Gear [setup_the_witcher3_dlc10_2.0.0.33.exe]
11 - Skellige Armor Set [setup_the_witcher3_dlc11_2.0.0.33.exe]
12 - New Contract - Skellige’s Most Wanted [setup_the_witcher3_dlc12_2.0.0.33.exe]
If that's the correct order then GOG Downloader is putting them in the wrong folder.
