Is there a List out there with the best hardware-producing companies... I mean, what if i have the layout for a beagleboard 5.0 and want to order 2k of them...

Is there a List out there with the best hardware-producing companies... I mean, what if i have the layout for a beagleboard 5.0 and want to order 2k of them... I find it pretty hard to get an overview over hardware factories...