“107,776 domains could not even be connected to.”
The Majestic Million turned out to have 211 duplicates, so it is really the Majestic 999,789. Of those, more than 100,000 didn’t answer a basic request at all. A ranked list of the web’s most important sites has a tenth of a graveyard in it. Plenty of SEO and research tools treat that list as ground truth.