There is similar collection in the joshbuchea/HEAD project, in DEPRECATED.md [0].

(It reminds me to finally gather and record remaining info about

    <meta name="keywords" content="...">

[0] https://github.com/joshbuchea/HEAD/blob/master/DEPRECATED.md

Keywords aren't (completely) dead (yet), unfortunately. https://bsky.app/profile/vale.rocks/post/3muylxyhg5222

Mention of usage by Yandex: https://yandex.com/support/webmaster/en/controlling-robot/me...

Why is meta keywords deprecated? I use them for my custom website search. I don't care that external search engines don't index it.