General update On DLC, Updates, Promotional, App content

The next hurdle I am dedicating development time to is implementing the following into OmniGames:

DLC
Updates
Promotional content (Demos, Samples)
Multimedia (videos)
PreProduction (this is already included in the main releases but I feel it needs its own section)
Cancelled (Prototypes)
Applications (Software/System applications)

This should complete the framework for the website, which means I can focus more time on adding metadata! In the background I'm currently going through the Wii library which will conclude Nintendo's lifecycle.
Omni1 is a 1G1R so I only ever planned for this to include games/dlc/updates. I've already coded it to group together the dependents for a given game, which you can see demonstrated here
https://omni-games.info/dat_analysis.php?grpid=GRP-7B5C0856&datid=DAT-0043DB6B&region=Japan