Nature Type 2.
Aspect Types 1, 2, 3.
This makes no sense IMO.
We know that the source (type 2 concept) is the most fundamental aspect of a living thing in MGnF, and it has never been even slightly implied that there exists a more fundamental aspect of a living thing in MGnF, meaning we can't assume that living things in MGnF have a type 1 concept.
Therefore, to say that nonexistent Graham, i.e. Graham after his most fundamental aspect of existence (his source) is destroyed and he becomes nothingness, can be affected by cm1 because only his type 2 concept is nonexistent is literally equivalent to saying cm1 can affect a MGnF character's source after it was already destroyed without any feats of affecting nonexistent things, which is simply wrong.
I'm not saying MGnF characters suddenly have cm1 resistance or something. I'm saying they only have a type 2 concept and completely lack other types of concepts, meaning even if a character has cm1, it would only relate to potency (cm2 resistance can't resist cm1, even if cm1 is only affecting a type 2 concept), and they can still only affect MGnF characters' sources (type 2 concepts). If their sources are nonexistent, then there's literally nothing to affect.
Therefore, IMO cm1 can't affect nonexistent Graham without feats of affecting nonexistent things.
However, if the wiki assumes that all things have a type 1 concept or something despite it contradicting the actual story, then I guess nonexistent Graham can indeed be affected by cm1, tho I disagree with the previously mentioned assumption.