Counterpoint Research has released its latest report on the smartphone SoC market. It reports that Qualcomm remained the #1 vendor of such silicon worldwide in 2019, even though its share of the market fell slightly year-on-year. This can also be said of the rest of the top 5 manufacturers, with the exception of Samsung and Huawei's HiSilicon.
https://www.notebookcheck.net/Qualcomm-MediaTek-and-Samsung-are-found-to-have-been-the-biggest-mobile-chipset-sellers-in-2019.461805.0.html