I don't know how much are you familiar with the brainwashing. I have never heard about brainwashing among aliens or spirits. Nonetheless, I would guess, that there may be some analog of brainwashing in your cultures.
The closest analog of brainwashing I find in your cultures is education. Most of aliens do educate their children. It is a very positive activity and is absolutely necessary for the health of your cultures.
Brainwashing is education in negative sense. Initially, a child is like an open empty notebook. Any program can be put in his empty mind. There are some preprogrammed, hardwired parts of knowledge, there are preferences of the soul, there is a potential access to Akashic records and other remote sources of information, but also there is a programming which is coming with education.
As far as I know, in many or most of your races, the children are born telepathic, psychic and do remember their past lives. Keep in mind that many of our children come to the world blank - they don't remember past lives, they are neither telepathic nor psychic. In those of our children who have these abilities, these abilities are very efficiently repressed by our culture, so they are also starting their life blank. This amplifies the opportunity for brainwashing that is negative education. Humans are typically brainwashed during the whole span of their lives.