Yes you are right of course Koen, and no, I do not see any relation of VMS with alchemy, not even with astronomy, but I'd be happy to be proven wrong anytime soon.
What I am following up is to understand any kind of influence, context and experience the five writers of VMS may have had. What they have seen, read, studied. Symbols, drawings, diagram layouts and styles, colors, structure.. and while doing that I am also trying to find if VMS has influenced later manuscripts, arts or documents of any kind. Source of inspiration->own production->latter source influence/inspiration. Maybe from this it might be possible to map where the sphere of influence is.
While it may also be purely coincidental, just for example, some symbols from Arabic alchemy books seem familiar, some diagrams like the ones up, do have familiar diagram structures (like rosettes), connected dots and so on. I am looking these coincidences just to get an idea what may have influenced what, where and how, just from visual side, nothing to do with content, whatever it might be. The writers of VMS have borrowed visual styles, not subject(s).