There's a whole bunch of US government sites on the list (notable inclusions: fda.gov, nasa.gov, whitehouse.gov) for some reason, as well as quite a few non-corporate web properties:
* Stack Exchange, but only one of their sites: superuser.com
* Wikimedia: wikimedia.org, wikidata.org, and wiktionary.org (but not wikipedia.org)
* Image hosting: imgur.com, giphy.com, tenor.com, deviantart.com, artstation.com
* Audio and video hosting: soundcloud.com, vimeo.com, dailymotion.com
* Blogging and web hosting: livejournal.com, squarespace.com, substack.com, typepad.com
* Fan fiction: tvtropes.org, archiveofourown.org, fanfiction.net
* Miscellaneous indie web properties: bogleheads.org, craigslist.org, ifixit.com, instructables.com, knowyourmeme.com, mozilla.org
Overall this is a very strange list.
* Stack Exchange, but only one of their sites: superuser.com
* Wikimedia: wikimedia.org, wikidata.org, and wiktionary.org (but not wikipedia.org)
* Image hosting: imgur.com, giphy.com, tenor.com, deviantart.com, artstation.com
* Audio and video hosting: soundcloud.com, vimeo.com, dailymotion.com
* Blogging and web hosting: livejournal.com, squarespace.com, substack.com, typepad.com
* Fan fiction: tvtropes.org, archiveofourown.org, fanfiction.net
* Miscellaneous indie web properties: bogleheads.org, craigslist.org, ifixit.com, instructables.com, knowyourmeme.com, mozilla.org
Overall this is a very strange list.