Wait what? Those are totally randomly picked games, that do not meet the criteria of being Hero Shooter. And you even eliminated one that has at least hero shooter elements to it, Apex Legends. I do not think that Gears 5, Titanfall 2 or Quake counts as Hero Shooters, at least not what I am envisioning. Also Call of Duty??? Really?
Edit: Maybe I should be more specific, as the term Hero Shooter seems to be understood too broadly. What I understand under this term is Team Fortress 2, Overwatch and Marvel Rivals. Deadlock is an hybrid and that is okay too. I also like Apex Legends, even if its main gameplay loop is not. With these constraints, I don't have many to choose from, that also play on Linux.