Yes, Leonie, it really could help. I've a park of many iMac Pro, Mac Book Pro, but all of them running on High Sierra or Mojave. For instance, High Sierra also mention the Nikon Z 6 2 in the same list...
So does it means when the OS detect he's trying to open a RAW file he doesn't know, he's downloading the asset data needed to open it ? But not doing it automatically on a "non-bigsure" OS... so perhaps someone that can open that kind of RAW from the Nikon Z6II could check if there are something special added in this AssetData folders ?
For instance, i've a file created in 01/2020 when I bought my Sony Alpha 7, this file content those informations
"<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleIdentifier</key>
<string>com.apple.MobileAsset.RawCamera.Camera</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6</string>
<key>CFBundleName</key>
<string>arw.sony.363</string>
<key>CFBundleShortVersionString</key>
<string>1</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>MobileAssetProperties</key>
<dict>
<key>FormatVersion</key>
<string>2</string>
<key>_CompatibilityVersion</key>
<integer>1</integer>
<key>_ContentVersion</key>
<integer>5</integer>
<key>__AssetDefaultGarbageCollectionBehavior</key>
<string>NeverCollected</string>
<key>__CanUseLocalCacheServer</key>
<true/>
<key>__InstallWithOS</key>
<false/>
<key>__RequiredByOS</key>
<false/>
<key>cameraNames</key>
<array>
<string>Sony Alpha ILCE-7M3</string>
</array>
<key>cameraVersionInfo</key>
<dict>
<key>arw.sony.363</key>
<dict>
<key>cameraContentVersion</key>
<string>4</string>
<key>minRawCameraVersion</key>
<string>8.01.0</string>
</dict>
<key>dng.adobe.sonyilce-7m3</key>
<dict>
<key>cameraContentVersion</key>
<string>1</string>
<key>minRawCameraVersion</key>
<string>8.01.0</string>
</dict>
</dict>
<key>cameras</key>
<array>
<string>arw.sony.363</string>
<string>dng.adobe.sonyilce-7m3</string>
</array>
<key>showInSystemProfiler</key>
<true/>
</dict>
</dict>
</plist>