It's OK James.
We learn by asking questions. Some learn quicker than others. I play what appeals to me, without knowledge of theory or the ability to document what I do.
When I ask questions therefore, it must be impossibly frustrating to people who speak the language.
Personally though, I ask questions to get some kind of answer. Does not matter if I understand or not, I can use the information to search deeper and deeper on my own , where nobody can see me struggle, until I find a way that makes sense. then I can rebuild everything I have been told, back to the point where the OP has been answered.
So when I ask, and people answer, when YOU answer, it means a lot. I may not respond straight away in a way that makes sense... but I have taken the information and gone away to a quiet place to digest it.
I get the post above. My nonsensical answer (that makes sense to how I think and construct music), is that there are no spacey/ psychedelic chords. Those terms are styles of playing. What they play has little true impact. It is the technique.. the gentle, low attack arpeggiating of fingers in positions that complement others to add to the overriding theme of the way you are assembling arrangements of notes.... and does not rely on chords or rigid formations. They are a building of a soundscape that can be minimal or of understated complexity, delivered in a way that suggests relaxation and surrendering to the sound.
Using that description, I would be able to piece notes together to create a spacey or psychedelic feel.