I found this about oil filters. Now dont know how old it is or if the same manufacturers still make the filters for the same OEM. But there are only a few company's that make filters.
There are just a few major oil filter manufacturers. Champion Labs makes OEM Motorcraft, OEM GM on some applications, AC, Valvoline, AutoZone and the Mobil 1 filter. Purolator makes the aftermarket MotorCraft, Group 7 and Mopar. Wix makes NAPA and CarQuest. And of course there is Fram.
All oil filter manufacturers make filters for the various private brand guys. Examples of filters made by others would include STP, Lee, Valvoline, Quaker State, Shell, Mobil 1, Bosch and Mopar. Champion Labs makes over 100 private label filters and more than a few original equipment (OEM) oil filters.