It is more like "Front-End/Java Script Developers worth Following on Twitter 2015" With the word "Coders," I was expecting a diversity.
In the last few years I have learned that "coders" now usually means JavaScript/Ruby people. Even as a web dev enthusiast I kinda wish we had more "traditional desktop/server" software people to follow.
There are a few mainly .net in my case:
@fekberg, @pragdave, @ericlippert, @ahejlsberg, @slluis, @martinfowler, @unclebobmartin, @davidfowl, @DamianEdwards, @shanselman, @Nick_Craver, @spolsky, @kevinmontrose, @codinghorror, @marcgravell, @filip_woj, @frystyk, @dhh, @tjanczuk, @troyhunt and most importantly: @jonskeet