Would it be against the rules to post a link to Kindle Unlimited book roundup?

I don’t want to violate any self-promotion rules, though this is in a bit of a gray area. I have a book that is in a Kindle Unlimited book roundup (I didn’t create the roundup). It’s intended for multiple authors to work together to cross-promote. While my book is in there, the idea is that I would be showcasing the work of others.

Is this allowed? It’s not strictly a self-promotion because the point of this is to showcase other books by other authors rather than my own, but I also do have the potential to get eyes on my own book so it’s a bit of a gray area. I wanted to ask before I shared.