After 20+ years using Gmail, I found a way to easily deal with regular email notifications where only the latest one is relevant:
I created a filter that applies a "Deletable" tag to any message matching the search parameter:
subject:("phrase in subject 1" OR "phrase in subject 2" OR "... )
Now if I haven't cleared out notifications in a few days, I can just pull up messages with the "Deletable" tag, bulk select, and delete. (Similarly for "Archivable")