1: Mccree’s lore was that he went off the grid when Reaper led the rebellion against Overwatch. He remained off the radar for years until he later resurfaced as a mercenary, so it’s debatable if she has any current information about him since that grid in her origins video

2: Mccree doesn’t have anything of interest to her. She’s all about gaining knowledge and everyone she’s listed has some dirt and/or pathway to something bigger on the food chain. Mccree might not necessarily have anything to go further for her to work with compared to the people she DID have on her chart.

3: Sombra refuses to acknowledge that there’s a grown ass man in full cowboy gear in the year 2076