When a person is persnickety, we say that they're fussy about details. The rest of this is psycho-babble for the same.
Obsessive Compulsive Personality Disorder
This one is different from regular OCD. The following paragraph was copied straight from this Merck website: here
Diagnosis of OCPD
A person with OCPD usually believes their thoughts and behaviors are normal, and other people are the ones who need to change.