@pavlospt I noticed that in the default detekt.yml code and copied that into my detekt.yml file as well:
ObjectPropertyNaming:
active: true
constantPattern: '[A-Za-z][_A-Za-z0-9]*'
propertyPattern: '[A-Za-z][_A-Za-z0-9]*'
privatePropertyPattern: '(_)?[A-Za-z][A-Za-z0-9]*'
or do you mean a different pattern?