An almost complete list of the item codes can be found here, though they sometimes aren't clear on what item they spawn (i.e. some PX weapons have different names but are identified by the codes with generic names):
Link
A few new items have been added since (and seem to be missing in almost all lists I can find):
FS_AssaultGrenadeLauncher_WeaponDef
FS_AssaultGrenadeLauncher_AmmoClip_ItemDef
FS_Autocannon_WeaponDef
FS_Autocannon_AmmoClip_ItemDef
FS_BiogasGrenade_WeaponDef
FS_BiogasLauncher_WeaponDef
FS_BiogasLauncher_AmmoClip_ItemDef
FS_LightSniperRifle_WeaponDef
FS_LightSniperRifle_AmmoClip_ItemDef
FS_RiotShield_WeaponDef
FS_SlamstrikeShotgun_WeaponDef
FS_SlamstrikeShotgun_AmmoClip_ItemDef
If anyone wants to peek into the entire item list, you can do give_items all and it will spawn all the items. Make sure to save the game first though so you can reload, because it will completely clutter your inventory. It's helpful to scroll through all the item ID's in the console to see what exists.
[Edited by Shade1982, 2/12/2021 4:35:33 PM]
Did you find by chance a way to read the codes for the researches?