address book app that groups by "group" instead of first letter of names

The phone app on my LG G5 with Android-8.0 groups contacts by the first letter of names and then displays the contacts under that letter.
Eg.
'A' is displayed with 'Anne' and 'Andrew' under it.
If I change the display to groups, it might show 'Coworkers (1)' and selecting it will show 'Andrew'.
I want one that shows the groups and the contacts under it without having to select a group to see the contacts under it.
Eg. 'Coworkers' is displayed with 'Andrew' under it.
Then 'Not grouped' with 'Anne' under it.
I hope I have explained what I want.
I've been installing many new address book apps but none seem to do what I want.

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