We definitely have it on the roadmap to update 2FA Notifier to include more educational content. Thanks for the feedback!
I am currently writing a series on 2FA on my site All Things Auth [1] that gets into the details explaining how each method works and exploring the security and usability tradeoffs of each. I want to put together a summary and/or infographic highlighting the main takeaways and hopefully like to something like that from 2FA Notifier.
Currently, we use the data from twofactorauth.org [2] as our main data feed. I definitely encourage you to check out their community on GitHub and propose your idea there too!