Thirty-seven businesses in the Kansas City metro area made the 2018 Inc. 5000 list of the fastest-growing companies in the U.S., a slight decrease from the 2017 list of 40 companies. Two area retail companies — Nickel & Suede and Mer-Sea & Co. — made it into the Inc. 500, each growing more than 1000 percent since 2014. Many companies made repeat appearances, include DEG of Overland Park, which was…