[WARNING] These are wrong:
int Flag_IgnoresNormalResist: 0x0000002
int Flag_MinorCrime: 0x0000004
int Flag_ChargingReload: 0x0000008
int Flag_HideBackpack: 0x0000010
int Flag_NonHostile: 0x0000040
int Flag_NPCsUseAmmo: 0x0000200
int Flag_RepeatableSingleFire: 0x0000800
int Flag_HasScope: 0x0001000
int Flag_HoldInputToPower: 0x0002000
int Flag_Automatic: 0x0004000
int Flag_CantDrop: 0x0008000
int Flag_ChargingAttack: 0x0010000
int Flag_NotUsedInNormalCombat: 0x0020000
int Flag_BoundWeapon: 0x0040000
int Flag_SecondaryWeapon: 0x0200000
int Flag_BoltAction: 0x0400000
int Flag_NoJamAfterReload: 0x0800000
int Flag_DisableShells: 0x1000000

According to "Au2942" on Reddit, the following is correct:
int Flag_IgnoresNormalResist: 0x0004000
int Flag_MinorCrime: 0x0000010
int Flag_ChargingReload: 0x0000008 (Not wrong)
int Flag_HideBackpack: 0x0040000
int Flag_NonHostile: 0x0001000
int Flag_NPCsUseAmmo: 0x0000002
int Flag_RepeatableSingleFire: 0x0010000
int Flag_HasScope: 0x0200000
int Flag_HoldInputToPower: 0x0000800
int Flag_Automatic: 0x0008000
int Flag_CantDrop: 0x0020000
int Flag_ChargingAttack: 0x0000200
int Flag_NotUsedInNormalCombat: 0x0000040
int Flag_BoundWeapon: 0x0002000
int Flag_SecondaryWeapon: 0x0800000
int Flag_BoltAction: 0x0400000 (Not wrong)
int Flag_NoJamAfterReload: 0x0000004
int Flag_DisableShells: 0x1000000 (Not wrong)

Source:
https://www.reddit.com/r/f4se/comments/8v03mq/is_there_a_way_to_get_the_leveled_item_in_npc_add/