Whose contacts are these on a company account?

The company's. On a company account every seat has its own card, and everyone who writes to a seat's card is kept against that seat.

• People shows the people who wrote to your company's own card.
• The Team screen shows the total for all seats under People who wrote, and each seat's own count on its row, marked wrote in. Its Export to CSV downloads everyone who wrote to any seat, with the seat and the person holding it in the first columns.
• A team member on a Locked card sees how many people wrote to their own card, but not the list itself. A member you switch to the full dashboard sees their own card's list on People and can download it; each download shows on their seat's page. See Your full dashboard as a team member.

When a seat changes hands, its address, its QR codes and everyone who wrote to it stay with the seat, so the new person carries on where the last one stopped.

Only the account owner and admins can download the lists.