Destiny 2 has an api that a lot of great third-party organizational tools are built around. But you can also download a sqlite file with all the set game info in it: weapons, abilities, perks, items, upgrades etc. I haven't messed with it in a while but I remember it being pretty small, one or two hundred mb.

It's highly normalized, to the point where it goes backwards and starts to actually interfere with human usability. Not sure if that helps your goal or hinders it. I used to use it for teaching both sql and the pros/cons/usefulness of the normal forms.