Regarding the final attained OVR in the player career mode.

In this system(FC25), there are several ways to create a new player to operate.
“Clean Slate”, ‘Custom’ and scenario-based stories.
Which of these options I choose, will the player I create reach the same final OVR?
If they are different, what is the option that results in the lowest OVR and what is the option that results in the highest OVR?