The main novels are ordered by publication date. The note for each book says what theme/sub-series it fits into.

Short stories & companion books are marked as "bonus books" and put directly after the book they follow in the sub-series (not too concerned with exact publication date order for these).

The four science novels are at the end.

As far as editions/covers go, I just selected the default on StoryGraph since that was faster. Sorry for the lack of visual cohesion!

Two handy graphics showing how all the books relate to each other:

https://d15fwz9jg1iq5f.cloudfront.net/uploads/blog/Discworld_ReadingGuide_Infographic_EpicReads.jpg

https://upload.wikimedia.org/wikipedia/commons/1/12/Discworld_Reading_Order_Guide_3.0_%28cropped%29.jpg