I've been looking at a few games code as I learn better that way converting from what I already know. Belle's was the first that has had decent commenting and looked logical to me even though it's truly massive.Belle has one of the best written code among all of the Ren'py games i've played.
Plus the variables actually mean something rather than just "xxx1" with me ending up with a page of notes what each is related to.
I broke down and joined his Patreon just for that despite my hatred for it.