7 people are the primary owner of at least one file in SS-Internet-Extensions/ContentBlocker, and Revertron owns the most: 34 files, or 34% of the codebase. The truck factor is 2: that is how few people would have to leave before the majority of owned files lose their owner. 65 files have exactly one contributor, and 1 module is dominated by a single person.
Engineering-leader view of who owns what: silos, hotspots, dead code, and bus-factor risk by person.