I have managed to create a workaround solution to get a company-level lifecycle stage funnel report.
Watch the trick in this post on my LinkedIn
It uses a custom code action in a workflow to identify one contact from a given company that would be included in the Contact funnel report. Then you get a kind of company-level report, and all the conversion & volume metrics available at hand
Still, keeping my fingers crossed to have an integrated solution built in and available directly in HubSpot