There’s also a few “fleet command” games. These aren’t really “combat flight sims” like the above, because the player isn’t experiencing a flight sim from the ship, but like the “space RTS” genre, the third dimension really alters the dynamics. Maybe they’re somewhat-analogous to a naval fleet combat sim.
The only example of this genre that I’ve played would be Nebulous: Fleet Command, but I understand that there are a few more out there.