It was harder than I thought, some spells don't belong anywhere, others belong everywhere :P
Tier 1:
Sleep
Mind Thrust
Tier 2:
Invisibility
Mirror Image
Tier 3:
Hold Creature (I don't think it should be divided into two spells.
Heroism
Tier 4:
Confusion
Phantasmal Killer
Tier 5:
Dominate Creature
Feeblemind
Tier 6:
True Seeing
Teleport
Tier 7:
Power Word Blind
Mass Invisibility
Tier 8:
Power Word Stun
Mind Blank
Tier 9:
Power Word Kill
Time Stop