There are 2 main variations, the glossy ken sugimori variant which is a normal corocoro card. And a non glossy Keiji Kinebuchi card which is an how to play pokemon promo. There are a few extra variants, one which is a lottery corocoro promo. This card has the correct illustrator (Keiji Kinebuchi) and has a glossy surface, this card is limited to 2000 copies. Another card which I dont know anything about, which is just chilling in @quuador s buylist has the same glossy surface and corrected illustrator but has the image a bit shifted. I think even Quuador does not know how this card was released. I will link some threads for you to read:)
Buylist from Quuador with clear images of all variants.
Original thread which explains the lottery ivy pikachu