"And all of these need to fall into my style rubric for me to love them and wear them - i.e. color or pattern, texture, RATE, leather, angular, androgynous, military, UWP, studs-buckles-zippers."
Una, that's what I think makes your essentials into statements. When I look at my original list of essentials, all of the items look very classic, and, if I'm honest, rather dull if they weren't given a boost by wearing them with a "statement" piece. If all of the items on my original list were of designer quality, then, maybe, they would have enough distinctiveness to be classified as statements, but, when most of them are mass-market, I think they are functional but not really stylish. I mean, really, a black V-neck sweater worn with black straight leg pants is hardly something that will set you apart from the crowd.
On the other hand, your "essential" black sweater would have much more visual appeal-- in your words: texture, RATE, leather, angular, androgynous, military, UWP, studs-buckles-zippers-- any of which would turn that sweater into a statement piece in my wardrobe. But, in your wardrobe, you'd use that black sweater in much the same way as I'd use that black V-neck making it do the same job. So, on a list of essentials, we might both put down "black sweater", but our reality would be quite different.
What I'm coming to realize is that I need to really expand my view of what constitutes an "essential". Instead of always defaulting to that classic V-neck, maybe the next time I need a black sweater, I need to take a page from your book and consider something that would work with other pieces but would also be more reflective of my personal style.
This has been so interesting for me and I can't thank you ladies enough for helping me come to this realization.