I know you PMed me but I also am not sure what the question is here... I guess I don't understand why you are using XML at all?
Maybe the question is just how to register the $mokusers array into the mokujin_users_bit template?
This is what I always refer back to-
https://vborg.vbsupport.ru/showthread.php?t=228078
I believe you'd be using the "Save into a variable for later use in custom template" option.