Here is the official list:
Of these, I know ERAU takes the GI Bill, but they require you to be enrolled in their degree program.
Higher Power is on there. The rest are mostly regionals who use it to train their new hires. ABX's program is affiliated with Sporty's. You should be able to use this list to contact them to ask.
http://www.faa.gov/pilots/training/a..._providers.pdf