Ant, what you are doing right now is pure nitpicking.
This whole thing can be divided in simply two topics
1) What the Higher Dimensions/Layers/Planes of Reality are in the Marvel Cosmology
2) The number of these Higher Dimensions/Layers/Planes of Reality
The first point is to know if there's an diference in scale between lower and higher worlds.
This is where scans like the ones in the Doctor Strange comics or the one with the Soul Stone fits in. It's said that in an "higher world" contains "lower worlds", like the Soul Stone that is an higher dimensional jewelry that contains an lower dimensional universe, or the explanation about dimensions as transfinites, or literally every scan that talks about the differences between an mortal and a god where is always said that gods exists in "higher world" and operates in "infinitely higher levels than the mortal mind" and that they are able to see reality with "infinite levels", etc.
It's consistent that the diference between the planes of reality are in fact diferences between higher/lower dimensions as we work with.
After it's established what these planes of reality are, we can work with the number of them. And this is where all these scans about "infinite levels of reality", "infinite planes of reality" or "infinite dimensional reality" fits with the idea that Marvel is an infinite dimensional cosmos.
Now talking about "Outliers". I will be honest, any instance of an "non-cosmic character" that is used to say that Infinite Dimensional marvel is false, doesn't work. Even if the cosmic characters were only Low 2-C, the interaction would already be an outlier. So an "4-B character" affecting an "High 1-B cosmic entity" doesn't matter more than the same occurring with an "low 2-C cosmic entity". These would simply be outliers that shouldn't affect the cosmology of Marvel Comics in any level. The reason for these instances being outliers are exactly so they aren't going to affect the consistency of our profiles, so they shouldn't matter.
But the difference between the planes of reality is something consistent between the various ages of Marvel Comics (Even more with these explanations being used to explain the nature of gods and other cosmic entities), so there's no point to say that this is an "outlier cosmology" simply because not every explanation about the multiverse is "there is this infinitely dimensional cosmos made of infinite layers of reality each one contain their own set of infinite universes that exists between these higher and lower dimensional layers". There'll be characters saying that the multiverse is "an infinite number of parallel universes", because this is what an multiverse is in its essence and should not be used to say that every other explanation of the multiverse is an "outlier cosmology".
Marvel Multiverse The Marvel Multiverse works with a system of
layers /
planes of existence, these planes/layer are said to be
higher and
lower realms whose diference is of
transcendence/transfinite levels ,
these levels are every level of reality. And withing this system, Marvel works with an
infinite number of these layers/planes of existence .
But even this entire system is an fraction of the totality of the Marvel Multiverse, inside the Eternity, exists an sea of primordial nothingnessand statements says that there's realms that exists outside the realms of time, space, infinity and beyond .
Other World
Other World is a part of Eternity and it encompass every aspects of space and time , and exists
above them where all the dimensions on the multiverse are crystals , this place should be at least Low 1-A,
inside there all of space and time exists as a simple game board .
Divine realm
Divine Realities are higher planes of existence ,
existing above and beyond our own level of being .
Gods like the Asgardians changes their bodies when they cross these dimensions,
their divinity exists in an scale of infinite,
even their minds are projected to work with infinite and beyond .
The gods are manifestations of conceptsand they exists separated from the mortal realm by barriers that separates reality from myth ,
and when their enter in the lower planes their power starts to diminish .
They can access
lowerand
higher dimensions,
altering their size . In fact
their divinity transcends dimensions and
are able to touch infinite,
higher existences and in
fact gods in the other universes are simply avatars,
their power crosses time and space to crate an avatar , but
all of them are linked to an unique essence that is what these gods are really like . But there's
an infinite number of these avatar that they use ,
and the gods existis as an concept in every plane of existence and in every time as an
myth of our collective reality,
and in fact their exists in an world beyond the concepts of time and space ,
beyond every human scale of space-time .
Gods like
Seth and Odin had threaten the entire multiverse,
infinite planes of time and space, and "Classic Thor" don't use "plane of reality" simply merely to parallel universes,
higher dimensions like Dormarmmu real are said to be an different plane of reality .