Well, it turns out that
Nova’s revision regarding the Hoyoverse was accepted, which downgrades the entire Honkai cosmology to Low 1-C. I am not entirely sure whether that corresponds to 5D or 6D, but Nova will probably clarify that once he is online.
Because of that thread, the 1-A scaling for the Outer Gods is now debatable, since that tier was mainly derived from fully transcending the Imaginary Tree, which was previously Low 1-A.
Quoting the profile:
Now, having made it clear throughout the thread that the Taoist and Buddhist references do not establish a clear scale and only serve to emphasize how Yog is a transcendent entity relative to the human world (with different cultures interpreting her existence and the knowledge she grants in different ways, which is one of the reasons why the character is not Tier 0), the only statements that can actually help with scaling are those found in the 5th Kizuna about how Heaven functions, along with a few miscellaneous statements made by Yog herself.
To begin with, we have several statements saying that
Heaven exists beyond space and time. In one mention it is said that time is “stopped,” but I do not think that should be taken literally, since the consistency with which it is stated that time simply does not exist there is overwhelming.
Unfortunately, we do not know how big this realm actually is, nor how it relates to the worlds themselves in scope, so due to that ambiguity it should be treated as a plane with Type 1 BDE.
An interesting aspect is that within this white world you can create universes (Imaginary Trees ???), through the power of “definition,” by establishing limits, which in this context refers to material limits such as space and time.
I previously thought about using this as evidence for some kind of R>F, but honestly it is not sufficient, and there is also no real evidence that the total composition of planes (magnitude equivalent to the sum of all tiers below 1-A) is being transcended in a way that renders them nonexistent/zero.
And, as I said at the beginning, the Imaginary Tree is now Low 1-C, so you cannot extrapolate a transcendence to a Low 1-A plane from that either.
So, putting all of this together, the conclusion is that Heaven scales to
Low 1-C or
1-C (depending on whether the Tree is 5D or 6D), with Type 1 BDE.
That means Yog, in the only key her profile should have, would fall into that tier.