It would also be great to be able to filter based on company lists for company workflow enrollment and company workflow suppression. It's curious that hardly any of the features available to contact lists have been carried over to company lists.
Thank you so much for your feedback! I'm Andres, a Product Manager at HubSpot. This feature should be available to all customers. When creating a Company list, you can select "List Membership" and then see a list of all other Company Lists.