This is a BIG compilation of information (and opinion) made by some of the more active raiders back on Turtle, primarily written by Khoni: https://rentry.co/e3i565dk
It's for rather early 1.18, so it's not "fully complete with everything in the whole game tested" as it's missing a good chunk of options that were added, but it has good first principles, explains a lot of what to do, and so on. "Guidelines more than rules" so to speak.
Also of note this is for raiding. Leveling and dungeons can be very different.
PS: Much like with the post containing the simulator, I did not write this, I don't have access to edit the document. I am just keeping knowledge alive.