These are my favourite 2*s for Elo that aren't banned. Some of the others clans I'm not as well versed with, but I generally consider these to be the best.
Gaia (unleveled of course)
Warren and Bree are also okay.
Wakai isn't too shaby. Wendel is also good.
Fang Pi Clang
If i needed to make a 23* deck with 4 2 stars 2 3 stars and 1 4 and 5 star what deck would u recommend?
OMG where is La Junta?! LOL Those pesky soldiers have plenty of playable 2*s.
Jane Ramba 2*
Molly (arguable, perhaps very, but 5/7 2* is what I would not consider a weak card)
Oh, I completely forgot.
Easily my favourite 2* in the clan, and one of my favourite in the entire game. A 7/2 who can hit for 4 damage AND score DoT poison. Heavy.