Apple's original AirPods snatched the majority of the true wireless earphone market at the end of 2018, according to Counterpoint Research. Its latest report on the subject put the earbuds' share at 60%. Jabra, Samsung, JLabs and Bose provided the remainder of the top 5 during the time studied.
https://www.notebookcheck.net/Apple-got-at-least-one-thing-right-AirPods-were-the-most-popular-true-wireless-earbuds-in-2018.415325.0.html