Can you recognize a region where is talking Russian person from, just by their accent? And how many accents are prominently distinctive at all?

Russian fellas, I'm from Voronezh, I know my G was sounding Ukrainian, I got rid of it already. If you're hearing a person from Voronezh with a sharp, artificial G, then this person rather knows foreign languages, and their level is higher average at all. Personally I watching any Russian YouTuber can't hear any signs of where they're from.

Some people told me that it's possible even detect a city where the talking person is from, by their speech. Is it true that every city has it's own speaking manner and some accent?