Farnam Street
Farnam Street is a mental-models publication known for translating ideas from psychology, decision theory, investing, and systems thinking into compact explanatory essays. In this wiki it matters less as a media brand in itself than as a useful interpreter of other thinkers' ideas.
Its role is clearest in the second-order-thinking material. Farnam Street takes Howard Marks' distinction between first-level and second-level thinking and turns it into a cleaner teaching tool, easier to apply outside investing. That makes it a recurring bridge between original thinkers and practical reasoning pages in the wiki.