How to sort results from UNIQUE function in Google Sheets

You can easily sort the UNIQUE results in Google Sheets using this formula:
=UNIQUE(SORT(A1:A13))

Simply replace A1:A13 with your data range and you should be able to sort the results from UNIQUE in ascending order (A-Z).

To sort in descending order, use this formula:
=UNIQUE(SORT(A1:A13,1,false))

1 refers to the column to be sorted. In this case, just use 1.
False sets the sort order to descending order (Z-A).