Can I rename a version of Minecraft?

I like every here and there testing an older version of Minecraft, from the "old alpha" versions to the newest ones. But a while ago I let my older relative play, and after that I found a version labeled "1.8.10" in the profile editor in the launcher. 1.8.10! That doesn't exist! So I decedied to launch Minecraft on the version.
It's similar to the normal 1.8, just has buttons named "Metro" and "donate" in the main menu. That means I'm running the Metro hacked client!

But what I don't understand is why it's named "1.8.10"? Is it possible to rename versions? If yes, how?

P.S. Asking my relative is not a solution, sadly.

minecraft-java-edition

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Can I rename a version of Minecraft? - Blue and White Labeled Can Beside Clear Drinking Glass With Orange Juice

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Can I rename a version of Minecraft? - Books On The Table

How do I downgrade Minecraft to a different version?

How to Downgrade Minecraft Version?

Open Minecraft Launcher on your desktop or in the location you put it and sign in to your Minecraft account.

Click the Edit profile option.

Check the two boxes and select the Minecraft version you prefer in the drop-down menu.

What version of Java does Minecraft 1.18 use?

Since Java Edition 1.18(1.18 Pre-release 2), Minecraft requires Java 17 or newer.

How do I change my Minecraft file name?

HOW TO CHANGE YOUR MINECRAFT CLIENT VERSION

Open your launcher and navigate to the Installations tab.

Click New Installation.

Name the installation and select the version that you would like to play. ...

Select the Version List in the bottom left and choose the version of your choice.

Click Play.

How to Change your Version of Minecraft (Java Edition)

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Images: alleksana, Guto Macedo, Ylanite Koppens, Ylanite Koppens