The cool thing about successful methods is that they can't be "outdated" in the sense that they don't work. They either work or they don't, but your interpretation of their method is their "method" to you and if it doesn't work for you, then it is not right for you, specifically (at least at that time in your training journey). The key is looking at your past training and figuring out what worked and what didn't and keep doing what worked and avoid what didn't. Eventually, you'll find a previous coach's method that sounds very similar to what works for you and then you can use their framework for help. If you want to keep doing this yourself, learn about why things worked or didn't work for you and then you will be able to help or coach others too.
My advice, read a running specific physiology book (or even a lydiard book, but I recommend Phil Skiba's book) and keep a note of things that are "obvious" in your own training and note things that seem wrong (to you). This has led me to find ways in which I'm unique and ways I'm just like anyone else.
Last thing, they all work, otherwise no one would use them at all, so if you want one method to work over another, you just need to individualize it, and I think all of these coaches/authors would agree with that (ie great coaches respect great coaches for a reason).