Are we incarnated into density sub-groups?

[Ohr Ein Sof]

So this idea just kind of floated into my head.

I remember reading how some 2D beings are assisted into 3D by their proximity and interaction with 3D entities. With that in mind, would "young" 3D entities be grouped others, or with "old souls" or even 4D+?

Just looking for other's observations or opinions.

From my own experiences, spiritual talent, or the ease of penetrating the veil, tends to run in families and even communities. The Law of Attraction could be a part of the reason for that, but I don't believe it is the full reason.
I imagine it like a physicist teaching 1st grade math. The physicist has an understanding that is so far beyond entry level that they would either teach beyond their student's ability to learn, or simplify it so much that the student doesn't learn anything new.
Would it be a disservice to both student and teacher to place them together where a student couldn't learn and teacher couldn't teach? Lessons may be learned but not in an efficient way.

Now I understand that we all have many teachers and students throughout our incarnation. Some are brief interactions, but there are some that are with us for the majority, like our families. Would families tend to be more closely aligned with their progression?

My mind is starting to move into "what if" mode which is not productive for me because of the near infinite scenarios possible and exceptions, so I'll leave it at this.

We are placed with teachers and have a teacher/learn relationship but to work on what we came to work on; while possibly exploring higher concepts that I cannot say for certain. Look at the area in the Ra Material when they are speaking about Roosevelt and his wife. We incarnate generally with the same group of people but more especially with people we have Karma with.
A soul advancing in their understanding will be provided teachers who are beyond 4th density; especially people who are connected to schools of wisdom (pure schools), those that are like Don, Jim and Carla and Wanderers; when ready, they can be contacted or taught in the sleep state. This all depends on the evolution of the soul and what it is ready for in the way of teachings.
The configurations are truly endless as there are many situations as to who and why we reincarnate. Remember, you have your personal teachers also that are with you always.
I believe that a Wanderer could reincarnate into an unfamiliar family in order to help the family. As a Wanderer would not have a "human" family.