For my game Astral Divide, I ended-up making a technique that is not listed.

It's similar to the one described as "Blurred Buffer", except that instead of doing a blur pass, I'm exploiting the borders created by the antialiasing (I think via multi sampling, or maybe texture filtering).

I draw the object in plain opaque white on a transparent black background, and in the fragment shader I filter what does not have a fully opaque or transparent alpha channel (according to some hardcoded threshold). It gives decent enough results, it's cheap performance-wise and is very simple to implement.