Do all antipsychotics work the same or are they all different in treating stuttering?

Do all antipsychotics work the same or are they all different in treating stuttering? I have been stuttering since childhood and I have been on some medications including antipsychotics. I was on 800mg of Quetiapine combined with 300mg of Venlafaxine which didn’t help. Now I am currently on 2mg of Risperidone that hasn’t helped either. I am also on 5mg of Aripiprazole which also hasn’t helped, but I am planning with my psychiatrist to increase the Aripiprazole to a higher dose and ween off of Risperidone. Then if Aripiprazole doesn’t work then I might try Olanzapine. I am wondering if all these antipsychotics work the same for stuttering or if they’re all different. Also, does propanolol decrease stuttering? I have been on antidepressants because I thought they would decrease my anxiety which is related to my stutter, but they didn’t help. So I am thinking to try a beta blocker like propanolol.