Who might the other two SMCs that most wanderers on Earth incarnate from be?

[kristina]

Would a 6D STS that is at the verge of flipping polarity incarnate in 3D so they could go STO easily?

Or is it easier to change polarity in 6D?

I think you just opened an awesome conversation bro.
Is it possible to progress AT ALL...without 3D incarnation?
Is forever, your state...post 3D?
Is this why they don't incarnate?
They don't wish to integrate fully...so perhaps some have come to 'test the waters' of unity, for the rest of the STS team?
I'm just falling down the rabbit hole.

Is this why they don't incarnate?

They do not risk the forgetting. The 3rd density veil is what they really do not wish to risk.

21.9 ▶ Questioner: Now, when the 75,000-year cycle started, [the] life span was approximately nine hundred years, average. What was the process and scheduling of— mechanism, shall I say, of reincarnation at that time, and how did the time in between incarnations into third-density physical apply to the growth of the mind/body/spirit complex?

Ra: I am Ra. This query is more complex than most. We shall begin. The incarnation pattern of the beginning third-density mind/body/spirit complex begins in darkness, for you may think or consider of your density as one of, as you may say, a sleep and a forgetting. This is the only plane of forgetting. It is necessary for the third-density entity to forget so that the mechanisms of confusion or free will may operate upon the newly individuated consciousness complex.

This quote speaks of why a negatively polarized entity chooses not to come to this plane of existence....

36.16 ▶ Questioner: Then the sixth-density entity who has reached that point in positive orientation may choose to become what we call a Wanderer and move back. I am wondering if this ever occurs with a negatively oriented sixth-density entity? Do any move back as Wanderers?

Ra: I am Ra. Once the negatively polarized entity has reached a certain point in the wisdom density it becomes extremely unlikely that it will choose to risk the forgetting, for this polarization is not selfless but selfish and with wisdom realizes the jeopardy of such “wandering.” Occasionally a sixth-density negative entity becomes a Wanderer in an effort to continue to polarize towards the negative. This is extremely unusual.

perhaps someone has already quoted this and that I am unaware. I apologize if I have quoted it twice.
Also, it would be good to remember that the wisdom density is the 5th density. There is a quote regarding how a 5th and 6th density negatively polarized entity would appear....

25:11 Questioner: Well, I will first ask the answer at the end if there’s anything we can do to make the instrument really comfortable. I’ll only ask the questions that the instrument has— or answer the questions that the instrument has energy left to give, but I really would like to know of the orientation of fifth-density negative for not participating in this battle.

Ra: I am Ra. The fifth density is the density of light or wisdom. The so-called negative service-to-self entity in this density is at an high level of awareness and wisdom and has ceased activity except by thought. The fifth-density negative is extraordinarily compacted and separated from all else.