Change How Contacts Are Sorted. Contacts inserted into a Contact Group use the Email Display as format. In the Contacts app on your Mac choose Contacts Preferences then click General.

In the Contacts app on your Mac choose Contacts Preferences then click General. Start the Contacts application. From the Settings sub-menu you need to tap on the General tab and only then you can change the way contacts are sorted.
Select Fetch New Data Turn off push.
You can use set options to change how contacts are sorted and whether to display the contacts phone number or company name in the list of contacts. You can use set options to change how contacts are sorted and whether to display the contacts phone number or company name in the list of contacts. Select Fetch New Data Turn off push. If youre in the contacts app the Settings sub-menu lets you directly choose the way your contacts are sorted by last name or first name.