Generally, popular clans include All Stars, Gheist, Junkz, Nightmare, Piranas, Roots, Sakrohm, and Skeelz. And Montana is a affordable, easy clan to enter ELO with. Check the public presets for card ideas.
Strongest clan in ELO is either All stars, Ghiest or Skeelz.
Although any deck with Eklore is doing well this week especally Roots,
Havin saying that i think its based on the Banned cards of the week, if Ghumbo and Oshitsune are unbanned then Nightmare rain the stage but thats rare