Just worth nothing that the options are far from equal. For example by my count (missing some sources):
Looking at just the current Wizard spell list up to 5th level:
- Abjuration only has one 2nd level and one 5th level spell
- Divination and Enchantment each only have two 3rd level and two 4th level spells to choose from
- Necromancy only has one 4th level spell
Compare with evocation, conjuration and transmutation that each have at least 5 options of each spell level.