I understand esoteric as something that’s often either fundamentally difficult to grasp (ie. an esoteric concept described in a short cryptic text might not be comprehensively explainable with a text five times longer that would be straightforward to write by anyone who understands the subject matter) or intentionally written in a way to keep it obscured from a cursory reading. The definition of hieratic doesn’t really connote conceptual difficulty beyond mundane technical complexity or a particular intention to keep things hidden, just that writing can be made much more terse if you assume an audience that is already familiar with what it’s talking about.
I understand esoteric as something that’s often either fundamentally difficult to grasp (ie. an esoteric concept described in a short cryptic text might not be comprehensively explainable with a text five times longer that would be straightforward to write by anyone who understands the subject matter) or intentionally written in a way to keep it obscured from a cursory reading. The definition of hieratic doesn’t really connote conceptual difficulty beyond mundane technical complexity or a particular intention to keep things hidden, just that writing can be made much more terse if you assume an audience that is already familiar with what it’s talking about.