For example, the feat Brutish Shove requires that "You are wielding a two-handed melee weapon."Do you have more context for the question?
I don’t think PF2 uses handedness for classification. The rules refer to how many hands you use to wield the weapon. The two-handed trait gives you a bonus when you wield a weapon with two hands, but you can wield any weapon in two hands, and that is sufficient to use any weapon with an ability that requires it to be wielded in two hands.
Note how this doesn't make the weapon two-handed. It only allows you to wield it with two hands.Two-Hand: This weapon can be wielded with two hands.
Note how this allows you to wield even a Shortsword in two hands to qualify for abilities that tell you to use two hands.Hands said:In addition, some abilities require you to wield a weapon in two hands. You meet this requirement while holding the weapon in two hands, even if it doesn’t require two hands or have the two-hand trait.