Mo, you look gorgeous, whatever the category!
Interesting how much variation in opinion there is, eh?
I see you as more of an X but really, somewhere between the two.
I don't think my waist is quite as distinct as yours (i.e. I'm more rectangular) but I also think I'm somewhere between an X and an 8. I will try to post some photos at some point but right now I'm away from home and can't.
Like you, when I gain weight, I gain it all over that lower region—bum, thighs, AND abdomen. Actually, I tend to gain all over pretty evenly.
Like you, I have been feeling lately that most A line skirts are not as flattering on me as they were when I was heavier. I do have one that I like a lot, but it has very little flare and the flare is really in the knee area rather than above (i.e. it is slim fitting in the hip area).
Also like you, my hip bones sit up high. In other words, we're short waisted. That is what gives us the slight 8 characteristic, and it may be the reason that some 8 recommendations are useful for us to consider. Does that make sense? We don't have as exaggerated a "shelf" as a true 8, however.