Bragi crowdfunded "The Dash" in early 2014 (to much publicity) and released them in late 2015. To my knowledge this was the first high-profile pair of "disconnected wireless earbuds".
AirPods were released late 2016, so a full year later, so they were not the first with this kind of a product by a long stretch. By that time, Bragi already released a second stripped-down version of their product. The Pixel buds also much more closely resemble "The Dash" than AirPods.
As for product pages, I sadly don't have paper trail, but I'm sure people more into the topic can find examples dating back ~10 years for pages where the product twirls around the page while scrolling (and there is nothing more connecting the product page for the Pixel Buds and the AirPods).