I think that the list is a bit limited and to an extent maybe biased. I agree with the points many of you mention in here.
One time I was given the knowledge by the Annunaki that they came with the genetics of many species within their templates and that they brought from Nibiru an ark with the DNA of the species that seeded the known part of Cosmos, which includes uncountable star systems that are forgotten or as Pucksterguy says that there is little information about.
For a while, along with the things that I have been channeling for a while from integrations, and the beings I often get to see in visions, it confirms that fundamental notion of the ark that the Nibiruans brought. From the physical perspective of genetics, then humanity carries the codes of uncountable species and all Earth humans are starseeds, directly or indirectly. Then take the notion of how from Cosmic animals civilizations developed and now the memory is kept here on Earth of each one of those primary species through all our animals. You see it in sci-fi and myths all over the world.
The new age conception of our Cosmic origins is much more limited than what sciences and sci-fi can provide if it is all linked to metaphysical notions that many authors have brought, including works like what Dolores Cannon found out. Sci-fi is a form of channeling, that even Kryon mentions.
Take as an example, from my personal life, my parents. My mother dislikes very much sci fi, is not interested at all in spirituality, but she is a starseed who does not remember past lives, even less offworld, yet I remember her from memories and healing sessions, retrieving large offworld bird aspects of her soul, a very beautiful delicate reptilian lady with a dress and some others. My father is an atheist, who is very negative, selfish, greedy and who as such came here to bring misery to many people, yet I have seen him in visions as a crocodile man and other ET aspects of his soul.
I could go on with many other examples of unawakened people who are not interested in bringing goodness or spirituality or other things, yet they come from the stars because I was shown part of their own Cosmic origins.
Over the next decades humanity will remember much more our origins and understand what species we came from. There are good reasons why it is not always so necessary or even good to remember those lifetimes before coming to Earth.
The Annunaki said that the long cycle of forgetfulness on Earth was needed so that we could play out many of the Cosmic dramas of species as human beings in one single planet for the final conclusion. It has been long, precisely because we carry the codes of species that were in conflict a long time ago, just like how you see conflicts in nature, animals that do not get along, etc...