Yikes! What a complex question!!!
Ansel said that some people are tone deaf to music, and others can be 'print value deaf' (my wording) when it comes to B&W prints. This suggests that just like some people have highly refined taste buds, others can have eyes highly attuned to the textures and tones in photographs. It helps to be in the latter group.
Showing my age here, but also believe Fred Picker was right when he said that once you get a good white and a good black, you have a work print. Knowing how and where to bring things out, hold things back, and eliminate annoying distractions is when the magic starts to happen...if done to support what the photographer/image is trying to say.
Finding the right paper & chemistry combination is critical.
For the way I worked (past tense...explanation later) using pin registered sharp & unsharp masks, I had to come up with a way to pick up from where I left off a day, or even weeks later if coming up with a good mask was difficult, or if I moved on to another print for a break.
It had to account for temperature changes, and because the working solution developer could be reused and lasted in airtight containers for several months, the method also had to account for starting a print with 'old' developer and picking it up again with fresh developer. The old and new prints had to match.
I ended up tweaking an Ansco 120 recipe with Glycin to give it longevity:
https://www.photrio.com/forum/resources/12-15-developer.123/
Now, to explain the past tense thing...
I kept working & learning how to make the very best prints I possibly could, then once having arrived there, found they didn't say what they should. They looked to me, once mounted, over matted, and framed, like looking through a window to a scene distant & removed. Odd thing is, I can enjoy or be amazed by other peoples traditionally printed, matted & framed photographs, but when it came to my work, they just felt wrong.
Felt a need to produce art objects to be held in the hand, on old world papers of character. Have wandered down salt print and Kallitype roads, and currently turning the corner towards polymer photogravure where Kozo, Gampi, and Chine Colle are whispering my name.
Maybe the one essential quality is; never being satisfied, always questing for more clarity. Once you are content & satisfied as an artist, you're dead in the water.
*Edit* also used 12/15 for negatives, so can be used as a universal developer.