As the key, use something that would be the same for both your duplicates, e.g. grep !$saw{lc $_}++, @names.

Or perhaps the more complicated: grep {(my $temp = lc $_) =~ y/a-z//cd; !$saw{$temp}++} @names

In reply to Re: Remove equal but different duplicates from array by ysth
in thread Remove equal but different duplicates from array by Baratski

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