This data is collected from the articles deck lists in EDH Chamber.
Vampire tribal is second most popular mono black tribal. Eternal vampire have a multitude of different commanders available and different game plans, too. One vampire tribal can focus on full combat with lord effects, other focusing on life gain and life loss and third can focus on stealing other players creatures.
Casting from exile is often found from red, and sometimes carries over combinations like rakdos or even mono black. Some popular cast from exile ways are madness, adventures, cascade and impulsive draw.
Casting other players spells is mostly found in Grixis colors. Ways to steal spells tend to focus around exiling libraries and abusing opponents graveyards most of the time. Decks focusing on opponents spells is close to chaos decks and can cause some irritation in the play group.
Dragons, alongside Goblins, are reds primary creature types. Dragons are reds strongest creatures and most of the expansions have some kind of red dragon in them. As dragons are expensive to cast, dragon tribal decks run multiple cost reduction effects and have ways to cheat the expensive dragons on the battlefield.
Mono blue has multiple ways to clone own or opponents permanents. The gameplay changes effectively, when you get to play your opponents biggest threats, too and clone decks can lead to some very weird and interesting situations.
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.