So this is a little complicated since it varies from card to card. Generally a card is just going to have a regular print and a reverse foil. Some cards have different variations to them, for instance a card featured in a theme deck, since that holo pattern is only seen in said theme deck. Some cards even have multiple different foil patterns to them too, but this is a rare case. You can generally find any additional versions of a card on a given bulbapedia page for a set. For instance, this is the additional cards section in Boundaries Crossed:
As you can see, some of the cards have additional non-holo deck exclusives, or different foil types to them. But not all cards have this. It just varies from set to set and card to card.
So just look at it as:
Reverse Sometimes additional versions.