A recent smartphone sales report for the first half of 2018 by Sigmaintell Consulting shows that Huawei shipped more than 25 million handsets (out of a 100 million total) with a notched display during the given period, followed by Apple with over 20 million units. The third position goes to Chinese brand OPPO.
https://www.notebookcheck.net/Huawei-is-the-king-of-the-notch-reveals-a-new-smartphone-market-report.320970.0.html