I am by no means a guru but I'll take a stab at it...
First two weeks of December are tough at all resorts. It's the lowest points of the year and the Xmas decorations are out. You can probably get in at OKW, maybe, but anywhere else you most likely will have to waitlist.
Slowest times of the year (ie easier to book at 7 months out) would be January and September.
I seem to remember reading that studios book up first, then 2BR, then GV, then 1BR.
BWV standard views book up fast from what I understand. I guess you have to book day by day to be guaranteed that view and it's lower points. Now with the new preferred view systems, I would guess the BW view would be hard to get as well.
BWV and BCV will be difficult to book during the Food and Wine Fest (mid October through mid Nov) and possibly during the Flower and Garden Fest in May. I haven't heard that the F&G Fest makes it hard to get in, but I have heard that about F&W Fest.
Hope this helps as you were asking for a wide variety of info. I know I wasn't terribly detailed, but if you post a specific concern, I am sure someone can address it here.