Headphone Adapter for iPhone 8 Adapter AUX Audio Jack Adapter for iPhone X Dongle Splitter [Audio+Charge+Volume Control+Call ] Dual Earphone Cable Converter for iPhone XR/XS/7 Plus Support iOS 13 by VNKSUG
https://www.amazon.com/Headphone-Adapter-Splitter-Earphone-C...
Archive links:
https://web.archive.org/web/20190816155627/https://www.amazo...
It's got an Amazon Choice badge, but most of the reviews appear to be for a workout/fitness band and a dice bag.
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Here's the archive of my search results page for those terms. It's interesting to note the ARCHIVE IS NOT WHAT I SEE outside of the archive. I see the VNKSUG item first, and I don't see the AmazonBasics cables at all.
https://web.archive.org/web/20190816155946/http://www.amazon...
[0] https://www.amazon.com/Headphone-Adapter-Splitter-Earphone-C...
[1] https://www.amazon.ca/Belkin-Audio-Charge-Adapter-iPhone/dp/...
(Though seriously, if anyone has a recommendation of a decent product to charge an iPhone and allow audio out at the same time, please post it)