A katar is a katar till......

[Nihl]

Excellent overview Jim! Unfortunately that summarizes my knowledge of the form as well. I did a little bit of looking around online and found an example that has the more usual two-bar grip instead of a single bar, though it's most likely an outlier and not some big subcategory or anything.

Back to the topic of leafs & blades briefly, my simple contribution is the leaf-bladed sword category itself. This is a style (that I'm sure everyone's familiar with) that is double-edged and has a slightly swollen "belly" or midsection that then tapers back down to a point (like a leaf), found all over the world.