I have done some studies on different deck developement for a Yu-Gi-Oh! card decks and these are what I have found seem to be the more common type of various styles...
Offense- Primarily focuses on power and taking down opponent yet leaving self at low defenses.
Defense- These have high defensive cards meant for protection but lack real stronge cards.
Stamina- These decks have cards that have effects that keep your Life points up and last longer then your opponents.
Mix- A combonation of the various types yet it leans more toward one of them.
Balanced- All cards work together evenly in the deck.
I'm a defensive type so my monsters, spells, and traps tend o keep me safe but lack the physical power to damge my opponent...
What are your decks style?