Need a similarity metric that describes these two curve as highly similar
While I still don't yet understand all the options in the dtw-python package, it seems as though the relative ordering of my two examples is now as expected using the code snippet 

alignment = dtw.dtw(y, yref, keep_internals=True)


This allows me to create the following alignment figure using that package. 



Additionally, the relative ordering of my two examples is now as I would hope. The more similar example has a distance metric of 6 whereas the more dissimilar example has a distance metric of ~11. I will have to explore the internals of this package more to see if I could be doing something even better, but this looks promising. Curious what the differences are in implementation that make this ordering so much different from the other two packages used.