How would nested worlds like this would this tier?

[BestMGQScalerEver]

So in this verse the baseline universe (just 3-D universe since no proof of space-time) is contained within a 1-D line and this hierarchy is infinite and everything is the same above as it is below so this relation of seemingly 1-D line containing a 3-D universe goes on for infinity. I'm thinking High 3-A at best for the cosmology but I'm not sure.

 

[Flashlight237]

This is gonna be freaking weird. A 3-D universe contained within a 1-D line is odd.

If the universe is contained within a line, then the universe would be considered a point, which only represents position. A line represents length and there could be infinite positions within said length. As such, if the universe is 3-D and there is an infinite relation between it and the line, the line should be considered 4-D.

If there is only the baseline universe within said line, I would imagine the line itself would be 2-C since that's as low as 4-D can get.

 

[BestMGQScalerEver]

This is gonna be freaking weird. A 3-D universe contained within a 1-D line is odd.

If the universe is contained within a line, then the universe would be considered a point, which only represents position. A line represents length and there could be infinite positions within said length. As such, if the universe is 3-D and there is an infinite relation between it and the line, the line should be considered 4-D.

If there is only the baseline universe within said line, I would imagine the line itself would be 2-C since that's as low as 4-D can get.

This goes on infinitely so like that 1-D line that contains a 3-D universe is part of an even larger 3-D universe that is contained by a 1-D line and so on

 

[Flashlight237]

This goes on infinitely so like that 1-D line that contains a 3-D universe is part of an even larger 3-D universe that is contained by a 1-D line and so on

Oh, that. Well, in that case...

The 3-D universe serving as a base serves as a point of a 4-D line.
Said 4-D line would be part of a universe that is 3-D compared to it, which would be 6-D compared to the base universe.
Then the line containing the 6-D universe would be 7-D.
And so forth and so forth infinitely.

Given that chain of events is infinite with increasing dimensionality for each universe and line, you're looking at a cosmology with infinite dimensions. You're looking at a bare minimum High 1-B cosmology as a result. In which case, whatever verse you're looking into, I'd look into making a CRT for its existence.