Reverse are Random Cards from Legendary Collection, E-Expedition, E-Skyridge, E-Aquapolis, Ex: Ruby and Sapphire, Ex: Sandstorm, Ex: Dragon and Ex: Team Magma vs. Team Aqua. the Border instead of the Picture is Shiny. there all Random, so you can have a Commen, uncommen, Rare, Holo Rare and even Trainers. But Crystal Types, Ex's and Stars aren't. there is 1 Differnce, the Reverse from Legendary Collection is more like all Exploision and from E-Expition and Up are just Holo.
Then we Have Alternative Holo's, there also Random. You can Find them in Ex: Hidden Legends, Ex: Firered and Leafgreen, Ex: Team Rocket Returns, Ex: Deoxys, Ex: Emerald, Ex: Unseen Forces, Ex: Delta Species, Ex: Legend Maker, Ex: Holon Phantoms, Ex: Crystal Guardians, Ex: Dragon Frontiers and Ex: Power Keepers. the Randomness us the same as Reverse. there are kinda 3 Types of Alternative. 1 is that on the Text, there's the Type of the Card (Not on Trainers). These are in Ex: Hidden Legends. 2nd is on the Spot of that Type, they Pasted a Set Symbol on =P. Ex: Firered and Leafgreen is the Only one taht has these. Note that Both are Further normal. the 3rd is that the Picture is Snihy, and that on the Picture Right Below the Set Sybol is Pasted on. Untill Ex: Legend Maker the Rare's and Holo Rare's where Colored, and (Un)commen where White. Sometimes the Symbol is on the Left Below. Lapras form Ex: Legend Maker is 1, Note that Ex: Team Rocket Returns till Ex: Crystal Frontiers the name Is in Gold if it is Rare or Holo Rare. Ex: Dragon Frontiers and Ex: Power Keepers only the Holon rare's are Goldlettering.
Note that since Ex: Ruby and Sapphire there's 1 Reverse/Alternative Holo a Booster, Legendary Collection till E-Aquapolis is for me a Mystery.