I use FilterBox and Buzzkill.
FilterBox does seem to be superior with an inbuilt offline ML model to filter spam notifications, whilst also having a robust set of heuristic filtering options.
It's also amongst the snazziest apps to use with a design that delights. Best lifetime IAP I made 7+years ago.
FilterBox: https://filterbox.catchingnow.com/ Comparison post: https://www.reddit.com/r/androidapps/comments/hsq7ep/buzzkil...