usernames

function usernames (inputs) {
    let unique = inputs.sort().sort((a,b)=> (a.length - b.length)).filter((v, i, a) => a.indexOf(v) === i);
    console.log (unique.join('\n'));

}
usernames(
    [
        "Ashton",
        "Kutcher",
        "Kutcher",
        "Ariel",
        "Lilly",
        "Keyden",
        "Aizen",
        "Billy",
        "Braston"
    ]);