You can always copy godmode9 to be your boot.firm, just make sure to rename luma to luma.firm or something as GM9 can load firms when you press A on them.
Normally when people have this issue they named their payloads folder "playloads" or something like that...
edit: wait, you do have a luma boot.firm on your root, right? If you don't & you're loading from nand, that would explain not loading from payloads as nand luma checks for folders on nand.
Also, you should be able to safely delete every single one of those payloads except godmode9, as GM9 is the only relevant one nowadays.