I would do:
Abjuration- Paladin. Warder, protector, and banisher of extraplanar evils. Baseline would be more caster-y, with the "armored knight" concept being a subclass.
Conjuration - Warlock. Lots of the creepy warlock spells are in this school, and they make the most sense as the "summoner" class.
Divination - Ranger. Inquisitors, hunters, and trackers. Perfect fit.
Enchantment - Cleric. Domain spells can broaden their capabilities, and clerical enchantment magic is what allows them to lead their flock.
Evocation - Sorcerer. Raw elements and blowing stuff up fits the sorcerer image.
Illusion - Bard. Fey trickery, and enhances their roguish tendencies.
Necromancy - Druid. Life and death, manipulation of vital energies. Different circles have different views of the undead, some being better at destroying them, others at creating them.
Transmutation - Artificer. The perfect school for magic tinkering and magic item creation.
Then either junk the Wizard, or make them a generalist who can learn any school as their major class power.