So, do you also attribute them to the neutral school?
Runic magic is a characteristic of the dwarf race, so it is more appropriate to compare it with Knight Training, Necromancy of the Necromancer, Irresistible Magic of the Warlock, etc. And if you compare it with the 4 schools of magic, then you can compare all other special abilities and the entire skill wheel.
The Shaman school is not magical at all (if "Shaman school" refers to the battle cries of orcs), because one of the main characteristics of orcs is their complete inability to use magic.
Весьма хороший попутчик... До первого перекрестка.