Well... honestly... I can't tell you if how your fiancé is acting could be diagnosable as some sort of personality disorder. Mental health diagnosis is a job for mental health professionals. And the reality is they don't always even agree. From my perspective, I think the more pertinent questions are... what can you do about this, if anything, & do you really want to marry & have a family with this guy? In my experience, things don't improve once you're married & have kids. If anything they intensify.

Personally I think the concepts verbal & emotional abuse are probably overworked. However, I'd have to say that, from what you wrote, what you are experiencing at the hands of your fiance is getting close. It strikes me that if you can't work this out amicably with your fiance on an informal basis, perhaps you should consider asking him to participate in some couples counseling with you. If he refuses that in itself may be a bad sign.

Here are links to some articles, from PsychCentral's archives, related to the subjects emotional abuse & how to deal with difficult individuals as well as a couple of articles on couples counseling. Perhaps some of the information in these articles can be of some help in figuring out where you stand & how to proceed:

https://psychcentral.com/blog/21-war...-relationship/

https://psychcentral.com/blog/signs-of-emotional-abuse/

https://psychcentral.com/lib/signs-y...abused-part-i/

https://blogs.psychcentral.com/bondi...onally-abused/

https://blogs.psychcentral.com/bondi...u-do-about-it/

https://psychcentral.com/blog/how-to...itical-people/

https://psychcentral.com/blog/5-ways...ficult-people/

https://psychcentral.com/lib/couples-counseling/

https://psychcentral.com/blog/answer...es-counseling/

I wish you both well...