To answer the toggle bit question, no, these are NEC1, so they don't toggle like MCE.

Also, being an entirely different protocol, these codes with not interfere with media center or Xbox 360 devices. In fact, they won't interfere with any known devices.

The codes from the Harmony database mostly match what's been posted already, but some are named differently:

12 standby
35 back
40 eject
41 power off
42 power on
47 power toggle
100 xbox nexus