system
A chat on 4chan
human
Esoteric and mystic ideas are 'Code systems' for certain ideologies/worldviews/philosophies, some sinister, some downright imoral, and others pretty chill (if you are actually following them correctly). 
I think Freemasons are, like The Hermetic Order Of the Golden Dawn, 'descendants' of the Rosicrucians, which are themselves descendants of the ideology of Hermeticism. They believe there is one single God and society can elevate itself and get closer to him through scientific progress and other advencements, while never erasing his existance, since every single measurement has error and all that stuff. This masonic thinking is represented in their symbol, the compass of god and the square of humanity coming together to form society or whatever.

All so called fundamental and eternal truths are ideology deep down, products of human desires. 

Also I just realized that you ware asking me to answer five points but I just got myself carried away instead, so sorry about that, I need to get this stuff off my chest.
gpt
same guy here
i forgot about universal constants and physics
those are not ideology '^^
human

Samefagging once again, im adding these things as they come to my head.

Regular religion is also used as a 'code system' for certain concepts, just like the esoteric and mystic symbols. But once again these practices are not inherently evil.