I haven't used NewsOn in awhile, but they've been around for nearly nine years now, having launched in November 2015.
They carry news streams from the various large station groups, including CBS, Tegna, Sinclair, Hubbard, Cox, Scripps, and Hearst. The ABC O&Os and Gray Media stations were initially on NewsOn, but each removed their stations from the service between 2020 and 2021.