Lots of games are at least split between Japan and the rest (EU/AU/NA), like when the retail card comes with JP voices as default installed and you can download JP voices in the Western releases. So even when all languages are in all versions, they can have a different SKU (this is relevant for cross-regional DLC compatibility on the eShop!)
You wanna check the product ID on the back of the box
on your example pic, BotW is HAC-AAAAA-XXX. The only letter that matters is the fifth one in the middle. That one tells you everything about which regional SKU situation you're looking at (well, almost everything). Unfortunately it doesn't allow you to clearly identify which region it is from or for or how many there are, it just lets you see when there is a differentiation. BotW has HAC-xxxxA-XXX in all territories, that is a global SKU. But something like Splatoon 2 has HAC-xxxxA-xxx for Japan, HAC-xxxxB-xxx for NA and Australia (note that Australia's SKU belongs to NA here and not fellow PAL-buddy EU for some reason) and EU is HAC-xxxxC-xxx. Now, B is not always NA and C is not always EU and A does not automatically tell you it's global or Japan. It's somewhat unclear what determines this but it is somehow related to the order it is published in and where the publisher's main HQ is. It's a bit of a mess.