You've made this sound like a small caveat, but it's actually a big deal -- the whole goal of the Boost Nomination Pilot is to explore how publication editors can be a vector for writers looking to get noticed on Medium. Medium's distribution algorithm is heavily favored towards stories that have been Boosted... and working with publication editors is a big part of how writers can get nominated for Boost consideration.
(Also, while I love Robin's big list of publications, it's inaccurate I'd strongly suggest using the official one on the Medium blog: https://blog.medium.com/meet-60-publishers-in-the-boost-nomination-pilot-bb4923442864)