Google/Alphabet/abc.xyz also doesn’t own the @alphabet Twitter account — Cleveland, Ohio’s Chris Andrikanich does. You can follow Alphabet under @alphabetinc, but not @abc — because that’s owned by ABC (and @abcxyz looks like an abandoned account). And that’s actually @aIphabetinc with a capital ‘i’ — not a lower-case ‘l’ — because that’s already owned by @alphabetinc. Confused yet?
Cofactor is a large, structured listing of people, places, and things. Here you can find the description of each topic.