I'm not sure what anyone's heard. But the unusual process was in 2019 with Harry. Although Harry was considered a 1st rounder by the mock draft consensus, it seems Belichick went his own way instead of with the scouts.
Here's the consensus big board from 2019. Harry is ahead of AJ Brown according to most of the amateur scouts:
2019 Consensus Big Board | NFL Mock Draft Database
Otherwise, you can see BPA in the Gonzalez and Keion White picks.
I'm not sure about Mapu, but I know it's been reported they didn't think Mapu was rated a 3rd rounder, but their board at the time didn't show any 3rd rounders. They wanted out of the 3rd round and found no takers.
If you mean Cole Strange, I think it's the same story. They were waiting for a tackle at 21, and 6 tackles got taken before them, including Penning who was considered an early 2nd rder. They were best off trading up for a tackle even if that meant reaching for Penning, but they were caught with their pants down, in a sense. The trade down from 21 was just a recognition that the values were 2nd rders. Kind of like this year (scouts believe the 1st round grades end at pick 14). They actually tried to trade down at the Cole Strange pick one more time but found no takers. Safe to say they considered him a mid 2nd round value.