This data is collected from the articles deck lists in EDH Chamber.
Decks with heavy focus on "at the beginning of combat" triggering commanders synergize well with extra combats. Extra combats decks' main strategy is often multiple extra combats or even infinite amounts with a combo!
Combo decks are control heavy decks, running a heavy amount of card draw or tutors. If the decks get to assemble the combo pieces the game often ends in an infinite combo.
As green has the best mana ramp options in the format, and the biggest creatures, too, it is only natural that big creatures / stompers decks are popular in mono green. Stomper decks have lots of ramp in them, and aim to cast big creatures to wreak havoc to the opponents.
Artifact decks aim to interact and gain advantage with own artifacts by copying them, turning them into creatures and simply create new artifacts as tokens. Artifact decks are very popular and they have multiple infinite loops.
Pirate tribals are creature heavy decks focusing on controlling and preventing opponents from winning with resource efficient interactions. Pirate decks are less combat focused than many other tribal decks.
Treasures are artifact tokens similar to Gold tokens. Treasures have an activated ability to create one mana of any color, by tapping and saccing the token. Treasures are available in every color but focusing on red and green.