Great article! I just wanted to mention one use that’s not mentioned: Chromium Embedded Framework. I don’t think it ended up being very widely used overall, but before electron it was the best option for some similar scenarios. Google Web Designer (originally started outside of Google as Motorola Ninja or something like that) was where I saw it used in 2014 but the project was older than that.
https://support.google.com/webdesigner/answer/10043691?hl=en