Here's my try:

#!/usr/bin/perl -w
use strict;

my %hash1 = (
        is_selected => 1,
        name        => 'Me',
        user_id     => 1,
);

my %hash2 = (
        is_selected => 0,
        name        => 'Admin Admin',
        user_id     => 14,
);

my %hash3 = (
        is_selected => 0,
        name        => 'Proximate Shine',
        user_id     => 15,
);

print join "\n" => my @sorted_names = sort map {
        $_->{name}
} \(%hash1, %hash2, %hash3);
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