I would say logic and introspection are conscious systems, but the more interior "systems of thought" such as create qualia are unknown.  Rather than make things up about what is unknown we can look to the names that have historically been given to what we are describing.  That is, what makes a quale is the intelligibility of reality, (which some might say is a quale itself, albeit next-order).  As the producer of intelligible reality, what has been said about it?  How about Plato, at *Republic* [508e](https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0168%3Abook%3D6%3Asection%3D508e)

> what gives the objects of knowledge their truth and the knower's mind
> the power of knowing is the form of the good.

Or Heraclitus, [fragment 1](https://archive.org/details/the-art-and-thought-of-heraclitus-fragments-translation-commentary-kahn/page/28/mode/2up).

> all things come to pass in accordance with this λόγος (*logos*).

Ok, the 'form of the good' and λόγος are pretty vague, but these are the early coinages for what makes appearances if you take it in the sense of intelligible reality and qualia, (and not in the sense of what makes reality in the first place).

'Intelligibility' itself is also one of these vague 'systems of thought', though much later coinage (late 14c.), including as it does the PIE root [*leg-](https://www.etymonline.com/word/intelligence) (1) "to collect, gather," with derivatives meaning "to speak (to 'pick out words')." — back to *logos*.