One thing I've never been able to figure out is if there is an existing taxonomy of glyphs not based on from where they originated, but purely based on the shap

One thing I've never been able to figure out is if there is an existing taxonomy of glyphs not based on from where they originated, but purely based on the shape and appearance of the glyph. Like topology for two dimensions: this glyph has one hole in it, this glyph has two. Unfortunately, just listing holes is about the extent of my imagination.