Sorting with Mongo
Change .sort({ featured: 1 }) to .sort({ featured: -1 }). You want those with featured value of true to come before those with false false.
It looks like default sorting by boolean fields goes from false to true (maybe because of 0 and 1 numerical values, and default ascending order). To demonstrate this, open the Chrome Dev Tools console, enter [true, false, false, true].sort(), and the result is [false, false, true, true].