Set Woocommerce default/required attributes by category

I need to find a way to automatically set default/required attributes for new products when a category is selected.

I have about 30 categories and each one of them have 5-15 unique attributes. I will be adding many items to begin with and so import is an option, but because the site is multi-vendor, There will be many additional products added over time.

I have found some similar requests listed below, but they all seem to be either dead ends or no longer supported products. The last one listed below is a part of a much larger product and front-end only.

Any suggestions would be very appreciated!

https://wordpress.org/support/topic/how-to-add-deafault-attributes-to-categories/

https://wordpress.org/support/topic/auto-add-mandatory-attribute-per-category/

https://wordpress.org/support/topic/defaults-attributes-for-specific-category/

I have also found this:" Category Attributes Mapping"
https://docs.wclovers.com/attributes/