The Alt-Coins that might break out from their current spots are Ethereum, Dash, Monero, Bitshares, Steem and Maidsafe.

There's a few others that have potential too such as NEM and NEXT. There's always wild cards like Ripple, but who knows what the hell is going on with Ripple these days. They've moved to their own segment in a way, but there's always a possibility of them landing something unforseen and the price going up.