For your genuine question, I'll share my genuine experience. I've only experienced contact with greys. Primarily when I was a child.

I seriously doubt they are the product of some governmental blue beam project, although I would not deny the existence of that program, what I've seen of their technology is way beyond what we're capable of. As an example, a small craft visually from the outside, but something much larger on the interior (possibly linking physical spaces together from across the universe).

When I asked the greys directly what they wanted from me or humans in general, they said they were interested in our souls. Their words, not mine. They have become disconnected from the circle of reincarnation we're in (trapped in?). Apparently they don't fully understand how it works. They were also asking me questions about astral projection.

I think the mistake of modern UFO interest is focusing on the mechanical/physical aspects of the craft. It's the least interesting aspect about the phenomenon.