Does anybody have any sources or articles that focus on whether incline bench is even worth doing? I know you can't spot weight lift for chest but I have but on quite a bit of thickness everywhere EXCEPT the upper section of my pecs.

Any advice on how to improve that section? Or is it just genetics or i still haven't bulked up enough? (i've gone from 154-196lbs) Or just keep lifting heavy and hope the upper section will fill in finally?