Honestly in it's most basic form any marathon plan should train you enough to complete the Dopey challenge. It's all about learning to run on tired legs and waking up early four days in a row.
2014 - I used Galloway's plan (minus the run/walk) and finished all four races comfortably. I didn't even have to take a single walk break (which was a mild victory for me) during what was my second marathon during Dopey (whereas my first marathon went much worse).
2015 - I used the FIRST marathon training plan and completed it comfortably.
2016 - I used a modified Hanson's plan and completed it comfortably.
2017 - I will use a hybrid marathon plan that I'm still ironing out the details and goals for.
I think the thing I learned the most during all of these Dopey events was trust how my body felt. Even before I followed the effort based model of running, I took every Dopey race as not necessarily goal times but moreso what felt comfortable to run on that day. This taught me that I should use this mindset on all my races because I have typically had the best experience racing doing the Dopey races.
I think
@ZellyB put it best, when it comes down to it simplistically the best marathon/Dopey plan is the one you can stick with and fit into your life because honestly in an event that lasts 48.6 miles, that may very well be less than 5-10% of the time you actually spend training for it. Thus, the opposite is "like your training plan because 90-95% of the time running will be with it, not the race." *Or in the case of my current marathon plan roughly 99.987% of the time spent running was training and my 26.2 mile race is only 0.013%.