Zardnaar
Legend
personally, i think fireball is only 'iconic' of wizard because they've had it for so long what with there being a good long point in time where they were the only arcane caster around to have fireball, as well as the aspect of people saying it is because of not wanting their toys taken away from their preferred classes, conciously or not.
it's much more a sorcerer or warlock spell IMO.
i'd give fireball to an evoker or elemental themed wizard, but i wouldn't put it in the base class if we were remaking spell lists.
it's a vaguely similar situation to the 'emergency crossbow' a wizard with a crossbow doesn't actually make a ton of sense thematically but because it was a fixture of the game for so long people started thinking it did, so when casters got easy infinite cantrips there was a not insignificant portion of people who went 'but what about the wizard's crossbow they won't need one anymore'
Crossbow was a very short thing. Only 3E.