I wonder if this would have been useful https://github.com/microsoft/presidio - its heavy but looks really good. There is a lite version..

I've used it, lots of false positives out of the box, you need to do a ton of tuning or put a transformer/BERT model with it, but then at that point it's basically the same thing as the OP's project.

Looks like it uses Googles Langextract, which uses only LLMs for NLP, while OP is using a small NER model that runs locally.

full of false positives though. but definitely good for some types of entities and regexes