Zardnaar
Legend
The wizard offers just as much as the bard and cleric in tier 1 5e.
The 5e wizard isn’t as strong as the 3.5e wizard. That doesn’t mean wizard isn’t tier 1 in 5e.
Compared to a bard a wizard has more spells known, a better spell list, more casts per day and a very strong tier 1 subclass ability.
They are in the same tier, just useful in different ways
low level wizards run out of resources fast, other classes that cast spells have things like bard dice and channel divinity so I don't think wizards are tier 1 low levels.