A lot have been really well noted on Bulbapedia. The keji kinebuchi glossy ivy pikachu is one version of which only 2000 cards exist. Here is a thread on that: www.elitefourum.com/t/japanese-ivy-pikachu-reprinted-corocoro-variant/29544/1
The corocoro shiny mew has multiple foil variants, a thread on that has also been made: www.elitefourum.com/t/shiny-mew-cards-how-many-are-there/21737/1
This is really hard to know from photos though since this card normally has multiple foil layers, but there are multiple versions of this one.