I recently showed a new employee Phabricator and among the things we looked at was tasks in Maniphest. One thing that I noticed was that the first thing that you see when you go to Maniphest is a search query called "Wikimedia-Incident - To Triage column". While this is probably very relevant to some, I think that most people would like to have something else there (I believe that authored or subscribed tasks was default at some point). Especially if you've just started working with Phabricator and click "Tasks & Bugs" on the left, being greeted by "something something incident" could be a bit scary.
Thanks for reporting this. Indeed, those queries are listed on top of "Global Saved Queries" on https://phabricator.wikimedia.org/maniphest/query/edit/
I have changed the default order for now.
Not sure if we have any shared understanding which queries should be "global" or not, at least I don't see any non-RelEng queries for specific teams anywhere.