Of the very many likenesses between spirit channeler mediums and alien contactees/experiencers there are a few noteworthy ones.
Succinctly stated, spirit channeler mediums and alien contactees/experiencers come in a variety of forms; both denote humans who claim to be in contact with otherworldly beings.
Spirit channeler mediums claim that the otherworldly beings are deceased humans and ascended masters and alien contactees/experiencers claim that they are extra-terrestrial aliens from other planets, other galaxies or even other universes (you can learn all about multiverse theory here).
Both spirit channeler mediums and alien contactees/experiencers are likely to have had a background of involvement in occult practices—by any other name. These may be generalized as practices that open one up. For example, emptying one’s mind of one’s own thoughts and thus allowing something’s else’s thoughts to enter. Or, via chanting or pulsating repetitive motions or drumming, short circuiting the mind so that it blanks out and, again, allows something else to take over.
In fact, the most well-known psychics (who are essentially spirit channeler mediums) have a background of Catholicism (find evidence of this in the article The Long Island Medium, Theresa Caputo & the Catholic psychic/medium connection). This is significant because Catholic are taught that communicating with the dead (necromancy, which the Bible forbids) is perfectly acceptable and holy. Thus, they pray to Mary, saints, etc. and it is one mere baby step away from communicating with any and all sorts of otherworldly beings.
Moreover, the point is that being a practicing spirit channeler medium is, itself, an occult practice. Being an alien contactee/experiencer is as well but some claim that they do not ask for it nor want it; however, there are those who do ask for it and want it.
Spirit channeler mediums and alien contactees/experiencers also report the appearance of spheres or globes of light; from large ones in their sky to small ones in their homes. Likewise, they both report electromagnetic disturbances.
Both spirit channeler mediums and alien contactees/experiencers claim to receive messages from otherworldly beings via telepathy; meaning that there is no need to be physically present with the otherworldly beings.
In the case of deceased humans it would technically not be possible as they are no longer physical. In the other case, we run into the difference between extra-terrestrial alien abductees, on the one hand, and contactees and/or experiencers on the other. Abductees have the experience of being taken aboard spaceships, being experimented upon and also receiving messages but contactees/experiencers need never even have as much as seen a UFO off in the distant sky.
Both spirit channeler mediums and alien contactees/experiencers involve the same practices two of which are: 1) some claim to receive the messages in their minds and simply retell them and 2) some claim to be “walk-ins” which denotes when a being takes over their bodies and speak through the directly (usually with very poor British accents).
Beyond the reception of the messages themselves there is also something similar about the actual messages: 1) Concern about our destructive systems of governance. 2) Concern about our destruction of the environment. 3) Assurance that the afterlife is a wonderful place wherein everyone and everything is wonderful (sure, you may have to pay back some karma or whatever but then; you’re good to go).
4) They promulgate a theology according to which there is no personal God but an impersonal force (Energy, Qi, Ki, Chi, Prana, Vril, the Force, etc.) into which anyone can tap and manipulate via their wills (this is magick 101 such as is practiced by the actor Will Smith).
5) The messages are 99.9% anti-Christian and .1% anti any other faith.
It is true that we have destructive systems of governance and have negative impacts upon the environment. However, the spirit channeler mediums and alien contactees/experiencers answer, the how to, is always the same; form a one world government and a one world religion—a new world order.
There are certainly many more likenesses so feel free to add them into the comment section.