Perhaps the obvious should be mentioned - you can have a mix of A or B.

As long as both ends of a run/cable are the same.

So the fact that pre-made patch cables may be one or the other doesn't mean the scheme used for the patch cables needs to dictate what is used elsewhere.

That said it may be of interest to note the Leviton jacks come with peel-off labels to reveal the color-coding for A - the default being B.