This model ("mnemonic") feels like a good tool to reason about your testing strategy. I ran across the "testing trophy" in the past, which really changed my thinking already, having been indoctrinated with the testing pyramid for such a long time before that. I wanted to share my favorite links about the testing trophy, for those interested:

https://tanzu.vmware.com/content/videos/tanzu-tv-springoneto...

https://kentcdodds.com/blog/the-testing-trophy-and-testing-c...