I use (nearly) everything as one-shot?
  • Neofin Blau and Neofin Rot
    Ilfosol S
    Ilford DD-X
    Pyrocat-HD
    Beutler's
    Maxim Muir's Compensating Pyrocatechin

I've never used Rodinal, though...

The only developer I'll re-use is "divided" D23.