Create “brand” and “MPN” settings for products

I am trying to accomplish the following:

• Add product brand and product MPN settings to products
• Have the settings be available in Quick Edit on All Products page (admin)
• Simple text field for each setting (one for brand, the other for mpn)

I would like to have both of them under the same setting (Product ID), as opposed to making 2 pods (one for each). I’ve tried various options with custom taxonomy, but I have not been able to do that. Adding additional groups for a Pod or multiple fields within a group does not create separate fields in Quick Edit.

How do I go about this, please?

Thank you!