Okay! And the correct answer is........."T568A". Yes, "A".
See the response by QQQ. The TIA/EIA 570A Residential Standard SPECIFIES T568A.
If I ever go on a job that somebody else started and I install an RJ45 jack or modular plug and it doesn't test right and I find out that the other end had been punched down with the "B" scheme then somebody must die!

As for the store bought patch cords being "B" - Who cares? all four pairs could be clear as far as I care! As long as it's a PATCH CORD (and not a cross-over) all of the wires will be going straight through from pin to pin.