When doing DBSCAN on the subclusters, do you cluster on the 2-D projected space? Do you use the original 2-D projection you used prior to k-means, or does each subcluster get its own UMAP projection?
These aren't visualized: I use identified clusters to look at manually to find trends.
I was not aware of a robust clustering technique that's better/as easy to use other than DBSCAN.