Probably not for the twin Simulacrum
Simulacrum isn't a creature until after the spell takes effect.
You shape an illusory duplicate of one beast or humanoid that is
within range for the entire casting time of the spell. The duplicate
is a creature, partially real and formed from ice or snow, and it can
take actions and otherwise be affected as a normal creature. (SRD, p. 180)
What the sorcerer is casting the spell on is a bunch of objects, not a creature, that become a creature.
(snow or ice in quantities sufficient to made a life-‐‑size copy of the duplicated creature; some hair, fingernail clippings, or other piece of that creature’s body placed inside the snow or ice; and powdered ruby worth 1,500 gp, sprinkled over the duplicate and consumed by the spell) (SRD p. 180)
Twin needs to be cast on a creature, specifically, per the rules you cited. With that in mind ...
Maybe you can (what is being touched?)
With a range of touch, it is unclear whether or not that which is to be duplicated must be touched or not. If yes, then provided that sufficient material is present, then the sorcerer is "touching" a creature and thus makes two duplicates of that creature. (thanks to @AlexMillette for that point)
I can see the ruling going either way, so discuss with your DM. The issue to resolve is "what it is that the caster is touching in order to create the simulacrum? The pile of material, or the creature to be duplicated?"
As an aside, regarding "touching" for touch spells and abilities, how the touch is to be executed isn't precisely defined. (A JCrawford tweet).