By Dan Weil The Jefferies roster of mostly small-cap picks includes stocks that its strategists screened for strong momentum and attractive valuations. Jefferies strategists have put together a list of mostly small-cap stocks that have strong momentum and are trading at attractive valuations. The strategists, led by Steven DeSanctis, don’t see small-cap and mid-cap growth stocks as appealing. “We sliced ‘growth’ stocks into a few buckets and found that, despite having been hammered, they are not cheap,” the strategists wrote in a commentary. “The underperformance ranks as some of the darkest t…