misc are for skill that are misc type like rapid throw of kagerouweapon_damage_rate
magic_damage_rate
misc_damage_rate
long_damage_rate
short_damage_rate
What exactly includes each of those? Magic is easy enough to guess, but which skills are considered misc? What exactly is weapon_damage_rate?
Also, does any of the @reload commands can be used to reload this file? Or do I have to restart the server everytime?
yes you need to restart everytime you change something