Brand vs Generic for brand product

We have a number of items of the second biggest brand in its niche but this brand isn’t anywhere near as recognizable as #1. I can either 1) create listings under this brand name; or 2) create them as “generic”.

1) Amazon has problems with using the brand and its GTIN codes on every step, taking back the brand approval that had already granted twice, among many others. 2) With “generic”, I can list 3 products as variation of the same product, so it saves money for ads; and Amazon will let us list products in peace. Packages also have very visible brand name of them.

Should I just go for generic listings? Or it’s worth fighting for the brand name?

Edit: we also have written and stamped approval to sell from the brand, but in my experience 2/3 times it’s ignored by support.