Hi 211, I had the same interrogation few times ago. As i understand it ICW use generic projectiles for all ships, so a turbolaser from a Strike cruiser or Victory Star Destroyer will shoot the same projectile type (Proj_Ship_Turbolaser_Green or red for rebs) and thus use the same damage type (Damage_Turbolaser). However, ship weapons can have different fire recharge time.
The hard way to find the info that you want is to search for it into the .xml files.
E.g. In corruption\Mods\Imperial_Civil_War_Light\Data\XML you can find Remnant_Space_Units.xml. In this file the first ship is the lancer_frigate, under the <HardPoints> line you can find the hard points that the ship use.
Now open HardPoints_IR.xml, into this file search for HP_Lancer_00. There you can see the Fire_Projectile_Type.
In the Lasers.xml, under the Proj_Ship_Small_Laser_Cannon_Green_Quad there is the Damage_Type.
And finaly in GameConstants.xml search for Damage_Fighter there you shall find the Holy Grail!
I hope that it was usefull and have a nice day.