This new feature was added recently which allowed you to search Friends faster as it would display Friends and 50 others who aren't on your Friends List on Xbox Live straight away
Fortnite Tracker now lets you search by Gamertag or PSN : r/FortNiteBR
1000+ Cool Xbox Gamertags Ideas (2022) - Gamer Tweak
New! Xbox Gamertag Search for Profile in Three Ways
PewDiePie's xbox 360 gamertag - YouTube
You can now check available Xbox user names with Gamertag.world
Gamertag availability checker
How To Change an Xbox Gamertag
Xbox One - How To Search Gamertags - YouTube
Express Yourself with New Gamertag Features - Xbox Wire
New! Xbox Gamertag Search for Profile in Three Ways
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Gamertag Lookup: Find the Tag You're Looking For
Xbox now lets you choose any gamertag even if it's already taken – how to change your name today | The Sun
PS4 Gamertag Search Online/PS4 APP/Non-official Site
How to Choose a Good Xbox Gamertag: 14 Steps (with Pictures)
New! Xbox Gamertag Search for Profile in Three Ways
What's a gamertag? - Microsoft Support
New! Xbox Gamertag Search for Profile in Three Ways
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Gamertag Lookup: Find the Tag You're Looking For
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Gamertag Lookup: Find the Tag You're Looking For
Xbox now lets you choose any gamertag even if it's already taken – how to change your name today | The Sun
Xbox gamertag search - Microsoft Community
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Gamertag Lookup: Find the Tag You're Looking For
My gamertag has a suffux despite not being taken - Microsoft Community
:max_bytes(150000):strip_icc()/007-xbox-gamertag-lookup-4179029-7986bdbf14e94095b8adbc3d8378219e.jpg "Gamertag Lookup: Find the Tag You're Looking For")