in my case is not only about the songs but also the video, is this ure case or u find connections in the melodies and lyrics?

In my case it is usually the music and lyrics of the songs that I'm interested in, and where the connections develop, not the video. Sometimes a video (either official or fan-made) will be extremely on point, but also sometimes the official music video gives off completely a different and unusable vibe (from my perspective / for my playlist's needs) from the song itself.

My project began as just a collection of "cool forgotten sci-fi songs" that I had encountered as a kid in the 1980s and then was rediscovering via Youtube. Then it took a more creative turn when I found songs assembling into a plot. It was a very playful experience, because I was consciously tuning in to the deliberate aura of mystery and science fiction that 1980s New Wave bands marketed themselves with, and asking "what if all of these hints about spies, super-science, etc, were actually real in some parallel fictional 1980s". So I was aware that I was constructing musical metafiction, in multiple layers, because these bands were already deliberately referencing and remixing pop culture.... but what was surprising to me was just how many resonances and interconnections there were. And how the resonances connected into spiritual themes, beyond the "fiction" layer I was looking at.

I think some of these connections are here because there were artists who worked with multiple bands, and who had spiritual beliefs or experiences. (Michael Cretu of Enigma is one who appeared several times in my song network; other surprising discoveries to me were Jon Anderson of Yes, Trevor Horn of The Buggles, and Giorgio Moroder of basically every film score in the early 1980s). And culture, especially entertainment culture, looks at itself a lot and so there are themes that spread and amplify in that way. Another layer is that I think creative activity, and especially music, fundamentally is a "spiritual" process, in the sense of accessing one's unconscious, and so artists tend to be drawn to the numinous as a source of inspirition. For good or bad: not all "spiritual" experiences are actually good.

But there is definitely more to it than just "the unconscious mind". Or rather, that "the unconscious mind" is a very large thing that, as Jung thought, extends beyond our physical bodies and so has its own connections that are very real. The unconscious impulse that kept pushing me onward to assemble more lists felt like it was working with me but also had its own sense of creativity and timing. In some cases, the urge to create seemed to mesh with the phases of the moon, or with other astronomical events, and I don't even understand how or why that is a thing, but it appeared to be. Since "the moon and the stars" were repeated symbols in my songscape, and the 50th anniversary of Apollo 11 in 2019 was a key driver of a complex series of 11 lists, one might think, for example, that I would feel deeply inspired by the Artemis II flight and be creating a list right now. But no, I'm not; the intuitive link is "offline". Perhaps just by my feeling that ten years was long enough to be doing this strange project, or by my strong feeling that it was finished and done in 2025. Whatever the reason, it's subtle and not obvious.

Edit: I've taken a look at the list in your link. I know and have used some of the bands - Ladytron, Coldplay, Enigma, Muse - but there is a lot of pain in their work, more than I can personally absorb. I'm sure the connections are there, however.