I mean, in the LITERAL FAQ page, it states that 1-A can be reached by this without infinite dimensions:
"A good way to accomplish this would be to show that whatever state of being in which they exist is completely independent of the number of layers/dimensions present on the setting. For example, if they are unaffected by dimensions being arbitrarily added or removed from physical space by virtue of transcending it entirely, or if they exist as a "background" or canvas of sorts in which any amount of them can be inserted. This argument generalizes to tiers higher than 1-A as well."
Basically: If they exist independently from any number of dimensions present, it would be 1-A. If the literal concept of physical space is erased, but they can still "physically" exist without the concept of physical space, it is 1-A. Because they don't rely on any dimensions to exist, as they exist above the concept of them.
Now this isn't ME saying this, it is the own wiki's qualifications. So if this doesn't qualify...then sorry to say: "******* change it".