Hi, @rv3 .
Hi there! Rio here from the Shopify Community team. I understand that you’re looking for a way to speed up the process of uploading your product variants. I can definitely help you with that.
One app that you might find helpful is the EZ Importer app. This app allows you to edit multiple products and variants at once, which can save you a lot of time. You can also use the app to import your products and variants from a CSV file, which can possibly be faster for your use case. I would recommend posting this same question to their support team as their app does have additional functionality vs our CSV import, which may help you with mapping the variants correctly.
Another app that you might find useful is the Variant Wizard App. This app allows you to automatically assign images to your product variants based on rules that you set up. This can save you a lot of time if you have a lot of product variants with different images. It also has other variant options that allow you to showcase your product variants in a customized way.
In addition to these apps, you might also want to consider using a product mockup generator tool like Placeit. These tools allow you to create product mockups quickly and easily, which can save you time when creating product images.