I already use the Bard for shamanic concepts, especially the Celtic bard and the Norse vǫlva. The main themes are: psychic divination, mind magic enchantment, shapeshifting healing, and outofbody travel and teleportion. The shamanics are clearly Charisma mages.
The Primal spell list adds elemental magic. This is less so for the Norse vǫlva, but actually great for the nature beings themselves, who literally are river, ice, fire, sunlight, lightning-thunder, wind, mountain, etcetera. Also, the Sámi noaidi has a reputation for weather magic, whence the Primal can make sense.
The Divine Bard can make sense for the Norse warrior magic, which is "honorable" and "courageous", mainly with abjuration magic that buffs, defends, and heals allies. I have been using the Paladin (and sometimes a paladinesque Cleric) for the warrior mages. I will think about how a Bard might work.