We review both the Ahrefs and Majestic linking root domains (LRD) and list the highest LRD for each domain.  Blue relates to Ahrefs and Yellow relates to Majestic.  From reviewing millions of domains, we’ve found that Ahrefs has the biggest index, but sometimes Majestic has indexed links which Ahrefs has missed.  This way we’re combining the data from Ahrefs and Majestic.