This guide has moved. The decision table now lives inside Is Grokking the Coding Interview Worth It?, next to the full review of the main course and the honest comparisons with the alternatives.
The short version: Grokking the Coding Interview is the default. The others patch a specific gap before it (data structures, dynamic programming, recursion, multithreading) or compress it when the interview is inside six weeks (Grokking 75).
If you are comparing across the system design track instead, that catalog is explained at Every Grokking Course Explained.