Documentation of LCDC.2 never mentions which of the two values is for what size
It'd be nice to not have to guess. The other bits' descriptions mention what 0 and 1 correspond to in general.
It is mentioned in the overview at the top of the page.
OBJ size: 0 = 8×8; 1 = 8×16
It is indeed mentioned in the main LCDC paragraph at the top, as @Peewi mentioned.
However, I noticed that for the other bits we seem to normally report what the bit switches to, often in detail (e.g. see LCDC.3) - but on LCDC.2 we're just mentioning "1 tile or 2", so maybe it makes sense to explicitly state the values there as well?
I think it's worth restating what set and clear mean, in the parentheses. It's possible to wind up at that section through a link and the above text be offscreen.