You're way overloading the idea of legal realism to make your argument, and ignoring things like the influence of critical theory (Marxist/Hegelian dialectic, which is not the same thing as Marxism), public choice theory, the pragmatic movement and so on. Yes, this stuff is very much inside baseball, but I don't think you should rely on Wikipedia to form your opinions about this complex subject.

FWIW I'm inclined towards liberal pragmatism, and biased with an admiration for Richard Posner, probably because I already shared his admiration for JS Mill. Posner's book 'overcoming law' is a good survey of judicial philosophies from the most conservative kinds of formalism/originalism to the most left-wing kinds of identity politics.