Aliens are demonic entities and they don't came from imaginary "distant galaxies". They are here in second heaven, under the dome. They are also known as the powers of the air.
Enter dimensional beings are certainly part of the mix. And the different dimensions live different entities. Some are lower and some are higher. And some of them are not e.t.s. Which would fit your mentioned categories.
But also some extraterrestrials are existing in different dimensions. They whole range of extraterrestrials that has been described is quite varried. Here are some descriptions of them that has been repeated by people who have close encounters.
The Pleiadians hang around the 7th to the 9th dimensions.They are highly evolved and have been described as looking similar to humans, tall, and quite angelic looking..They are assigned to certain people and have only our higher interest and evolution in mind.
The Arcturians are even more highly evolved, have bigger heads, and hang out at the 9th to 12 dimensions. And They are ever present to help our evolution an protect the earth from nuclear annihilation. They are tall.
They Greys are smaller than us and act more like scientists and technicians. They are more easily visible in the 3rd dimension, so people see them more often, than other aliens. Although there crafts and travel also go into the higher dimensions.
The reptilians are highly intelligent also, and look like what would think. They are 3, 4, and 5th dimensional and are very shrewd, crafty and greedy and into power. And people have reported a lot of people in high power positions are reptilians. But over the years, now the lore is some reptilians can be nice saying they're not all evil.
So just to inform you of some of stories on E.T.s and that's just the tip of the iceberg.
Different dimensions are accessible, according to ones state of mind. As as one meditates or operates on a higher frequency then there is contact with who and what is there, and its helpful.
Fear is a low frequency so it attracts who ever is around that frequency.
Or some people just wake up and see them in everyday 3 d. And then there is usually a time loss. Where suddenly its many hours later ans you don't know what happened.