one thing to consider if you have a carbon bar

many carbon bars have a minimum recommended width … and some of those carbon bars have an insert or more material (increased wall thickness) at the ends

decades ago off road motorcyclists would find the ideal bar length by measuring spread of the hands when doing pushups … not sure if that is still a thing

years ago mtb bars were too narrow - now I see many that look too wide … ridiculously wide … but that’s just my opinion