Field-tested by my team. Categorisation was granular enough to segment by sub-vertical without regex. Bought it for a United States cleveland clinic locations united states market-sizing project. Wished a few smaller towns had been included.
Thanks for the detailed review, the email/LinkedIn coverage you mentioned is on our list for the next pass. If you want the gaps fixed sooner than the next refresh, open a support ticket and we'll spin a one-off pull.