Can we set something to have autoturret ignore players AND guntrap, flametower hurt players ?

Under RuleSets and default, you can add "traps cannot hurt players":

  "RuleSets": [
    {
      "name": "default",
      "enabled": true,
      "defaultAllowDamage": false,
      "flags": "AuthorizedDamage, HumanNPCDamage, LockedBoxesImmortal, LockedDoorsImmortal, AdminsHurtSleepers",
      "rules": [
        "traps cannot hurt players",
...​

and then define traps under EntityGroups, for example:

    {
      "name": "traps",
      "members": "AutoTurret, BearTrap, FlameTurret, Landmine, GunTrap, ReactiveTarget, spikes.floor",
      "exclusions": ""
    },​

Merged post

Sorry, in your case you might want two EntityGroups, one for each set of traps that can/cannot hurt players.  Then above in the default RuleSet, use something like "badtraps can hurt players" and "goodtraps cannot hurt players."