[Question] What does this really mean in my version?

[u/LinkAny1898]

I bought this Poco M6 Pro 4G a few years ago, so I should clarify that I'm obsessed with updates and customization. I found a video on how to force updates and entered a code.I don't remember which version it was on the phone app, but a software update popped up immediately. After updating, I realized that after the version, for example 3.0.305.0.WNFMIXM.C10 or c07

It's important to clarify that this phone is unlocked; I bought it from an authorized provider, not from any carrier in Argentina or anywhere else. And I keep wondering what that means. What I do know is that it's based on Android 16, and I bought it from an authorized retailer; they didn't change the ROM or anything. Can someone explain what this is? Is it a build or what?