Things like skin tone variations are not defined as individual code points. They are sequences of code points that combine to make the full, customized glyph. S

Things like skin tone variations are not defined as individual code points. They are sequences of code points that combine to make the full, customized glyph. So you have one code point for "medical", one for "professional", one for "female", one for "brown skin", one for "blond hair", and from that you get a more specific picture of a doctor..