I've been followimg some leads. Here is a website that includes more stories very much like (suspiciously so) the ones we have already discussed. (For some reason I am unable to copy and paste from this site.)

Here are some non-spooky explanations for genuinely dead people clawing the insides of their coffins.

And here's five modern and verified stories of 'dead' people reviving in morgues.

Here's the first ...

... the second ...

... the third ...

... the fourth ...

... and the fifth.