Your poll REALLY needs a "Something Else/None of These" option. And better definitions for its terms.
Ultimately, none of those, as the Wizard proper is "(Magic) Solution Man". ("I have a spell for that....")
Let me work backwards here.
Scout is properly the niche of a Rogue, Ranger, or similar.
Face is properly the niche of a Bard, Rogue, or other Charisma-focused/social-oriented class.
Monster Summoner thematically is probably a better fit for classes similar to Druid, Sorcerer, or Warlock.
Battlefield Controller is not really a good primary niche for any class - while very useful, if the character doesn't have anything to back it up, it rapidly devolves into a boring "Yay Team.", and a character whose contributions (no matter how valuable) often get overlooked.
Buff/Debuff is the same.
Damage Dealer. There's a reason the fireball-casting wizard is iconic. Niche-wise though, this can be split off. You'd want to strengthen the class in other ways to compensate however.
Party Sage. I'm not exactly sure of your definition here. "Know-it-all Man" is definitely on-brand for a Wizard (it's what the word originates from, after all), but barring divination spells, has mostly been related to the skill-monkey class. (That's actually one of my few frustrations with 3.x and its descendants.) Also, not really good for a primary niche, for the same reasons as Controller and Buffer, and further complicated by the fact that it is generally non-combat focused.
That pretty much leaves "Utility Caster", which is on-brand for Wizard/Solution Man. However, given your poll's defined limits incredibly restrictive and almost entirely used outside of the climatic events. And also a bit boring even outside of that.