You, my friend, murder irony.
You haven’t provided enough information on your application for us to adequately help.
Yet in the same breath, you feel entitled to ask others to share their work.
RAG (and sentiment analysis/classification) is most commonly used back-end and it’s the only use case for which I’ve ever implemented.
I do not have anything I can publish for you, nor will anyone else that I can imagine posting here, unless someone has open sourced/contributes to open source efforts relating to some sort of democratized RAG for benefit of others.
Great, good luck to you in those future requests.