It essentially is Helvetica, but with some minor tweaks such as the serifs added to the 1.
Even though it's "CNN Sans", it's really Helvetica.
No, it's not Helvetica. But it is something grotesque.
I can already tell it's from a Vox video, and upon browsing fontsinuse.com, I have found that the font you are looking for is Balto Medium.
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