My decks are all outdated, having nothing but WotC series cards. Nevertheless, here they are:
Deck #1: Grass/Fighting
The deck is basically one of the Starter Decks from the Neo Discovery generation that I merely added onto with other Neo series cards. Main cards include Heracross, Butterfree, and Hitmontop. A lot of Trainers involve healing the HP of the Pokemon, such as Healing Field and Moo Moo Milk, and it has a lot of draw cards like Professor Elm and Bill's Teleporter. Back when I played, it never lost a single match.
Deck #2: Kanto Gym Skirmish
The deck is basically a Koga Starter Deck that I built on, adding other Gym Leader Pokemon, such as Erika, Brock, Blaine, and Lt. Surge, although most of the other Gym Leaders are Colorless Pokemon (Brock's Lickitung, Lt. Surge's Spearow, Blaine's Tauros, etc.) The key card is Koga's Beedrill, using it in conjunction with Fuschia City Gym to reuse its Hyper Needle.
Deck #3: Fighting
The deck consists of mainly Fightning cards (Hitmonchan, Golem, Dark Machamp, Aerodactyl, Kabutops) as well as some Colorless Pokemon (Pidgeot, Kangaskhan, Wigglytuff).
Deck #4: Water
The deck consists of mainly Water cards (Kingler, Light Dewgong, Lapras) as well as Dragonite.
Deck #5: Water/Fighting
Whatever didn't make it into the last two decks was made into this one. Includes Gyarados, Piloswine, Ditto, Poliwrath, Machamp, Hitmonlee, Snorlax, and Articuno.
Deck #6: Grass
A speedy Grass deck with a lot of heavy hitters, such as Nidoqueen, Nidoking, Venusaur, Scyther, Beedrill, Butterfree, Pinsir, Victreebel, and Vileplume.
Deck #7: Lightning/Fire/Psychic
Basically a throw-together of whatever Energy I had lying around, with a mix of powerful cards. Includes Xatu, Gengar, Clefable, Raichu, Mr. Mime, Rapidash, Electrode, Electabuzz, and Dark Macargo. Uses Energy Stadium to get the right Energy.