And if he tried out different grips to see which was the most comfortable for him, that's just about the position he'd find for the overhead press
Same goes for the row.
There's a reason these positions are chosen. It's because they're both comfortable and offer a mechanical advantage, making you able to lift the most with the least risk of injury.
Get the basic idea, then do it in the way which is comfortable, but works your muscles most thoroughly.
In the end we're just lifting stuff up and putting it back down, it's not brain surgery
Don't overthink it.