Re: Excellent article
As far as I'm aware a company as a legal entity, even if it's a sole trader, has no "personal" information status.
Certainly, GDPR refers to, and is concerned wholly with, the rather odd-sounding entity of the "Natural Living Person". My understanding is that this is phrased in this way to exclude legal entities that may otherwise be treated as "persons", such as companies in certain circumstances.
Of course, IANAL, and that is simply my understanding of why it is phrased this way.