@axodys In the event I use some other apps in that genre that you might not have run across:
For plaintext on iPhone, I tend to use Working Copy, iVim, or Textor.
Drafts 4 still serves for random stuff where I don’t want to think about what to name the file. Editorial I soured on after it lost some work with its Dropbox sync.
And Apple Notes is actually surprisingly capable these days; if Drafts 4 dies, I’ll probably switch to it.