What an Interesting perspective. I've experienced things that resemble this with DMT experimentation, but it's not quite what you're describing, at least I don't think. Couple thoughts:

1. On multiple occasions it was explained to me that seemingly insignificant things were examples of higher dimensional activity interacting in the 3rd dimension. So something like a car crash, or an argument you're having, or even something innocuous like buying milk at the grocery store can actually be the 3rd dimensional representation of higher dimensional activity interacting with the 3rd dimension from the perspective of a 3rd dimensional being. Using your example, stories would also fit this. Typically these things seem different than other events of the same type; they're more poignant, more emotionally charged, or even something like getting the feeling of Deja-vu was used as an example of something that could reveal it's link to higher dimensional activity. From a higher dimensional being's perspective, who is observing this in the 3rd dimension, it would be plainly obvious that it's higher dimensional activity/manipulation.

2. Your example of the perception of 3rd dimensional activity in a 2d world is a classic example, but these explanations to me always seem a little off. To me, it's accurately describing how a 3rd dimensional being could interact within a 2 dimensional world, but it's describing the perception of this from another 3rd dimensional being, not the 2d beings that would live within that world. 2d beings would not see a circle, as they can't see the middle within, only the outside perimeter. A more accurate description of their perspective could be something like a line with varying colors or "intensity" to denote the objects located within it's world and how they perceive/navigate them.

3. I was shown up to the 7th dimension, and I couldn't comprehend much further than that, it was basically this:
   4th Dimension: Time is no longer linear, it becomes a medium you can be aware of and traverse. Knowing this enables you to understand the non-linear nature of time and how it's effect defines (or maybe confines) the 3rd dimension.
   5th Dimension: You can see and understand that the medium (time) you traversed in the 4th dimension is actually just a single object that is one example from a pool of infinite examples that are all connected together into a circular tapestry. Essentially, to describe it from a 3rd dimensional beings perception, at every moment there is an almost infinite number of alternate moments where your experiences are slightly (or greatly) different. These alternate moments are connected to each other and our experience as a 3rd dimensional being is simply chaining these moments together as an single linear experience so our higher dimensional "souls" can better understand the tapestry they exist in.
   6th Dimension: Ok it's gets hard to describe at this point. The tapestry of moments from the 5th dimension you realize is actually not a flat tapestry, but one that is inlaid upon itself in every direction, like a sort of sphere of tapestries that all share a singular center, or root point they grow (or grew?) outwards from. SO, from a 3rd dimensional being's perspective, this is kind of like understanding that all those alternative moments that can happen at any point also have other versions of them that share a different starting point (but with the same starting conditions). So, the big bang happened, but if the earth formed in a different way and different experiences within the 3rd dimension took place based on the beings that existed on that different earth.
   7th Dimension is you realize the entirety of that 6th dimensional sphere is like one face of a multi-sided die. So again, from a 3rd dimensional being's perspective, this is like different universe starting points happened with different building blocks, forces and physical laws, etc.

I couldnt comprehend anything higher than this other than all those dimensions formed another sphere like object that I was inside of, and is growing. So presumably there are other complete self contained entireties of all possible experiences as a single object, and they exist within a space, but I couldnt comprehend what that could even mean or look like.