You just want a flatter hard sole - Adidas, Vans, Converse, even the thin Asics Tigers work well. I also like the Merrell Glove line. I've heard good things about the Nike Metcons, but haven't tried a pair.
For Olympic Lifting or you like squatting with a heel, buy real Olympic Lifting shoes. Adidas is more or less the best choice for most people in terms of price and durability. In a pinch, plain better quality dress shoes or boot will give you the feeling of squatting and benching in a heel.