My apologies for the jumping and overall quality.
Extras | [gif version] [2] • Source: look at it
I tried a new masking approach and it worked fine, but made the morphing unstable. I spent more time trying to salvage it than anything else. Since I haven't posted anything in awhile and it took so long I didn't want it to go to waste, but it's not super great with the jumpy movement.
As a side note, I tried Davinci Resolve (fusion), and while it seemed like it could do a lot, I'm not sure this type of animation is easy to do in it.