Mostly there is no problem in classifying the glyphs of this kind.

I have, though, classified two glyphs as GD13 which are doubtful, Aa6-28 and Aa8-83:

Indeed, I had not intended to classify Aa6-28 as GD13 until I saw Aa8-83.

I believe these two glyphs are alluding to GD13 by way of their design.