Last Name variations should be entered into Other Last Names field. When a Suggestion is shown for Unique Names, you should mark those as False Suggestions, IF the spelling is correctly entered for the variations.
First Name variations should be entered into Other Nicknames. Suggestion should be updated the same.
The Suggestions about Unique Name occur when that is the 'only' profile using that spelling variation. If the spelling is accurate for a spelling variation, then it is a False Suggestion. Otherwise, the spelling should be corrected if it was actually entered incorrectly.
Adding the spelling variations in both fields 'hopefully' will eliminate some duplicate profiles from being created because those fields are used in Searches.