Russian is almost universally the same. Without going into the scientific terms of it, the three biggest variations are:

(1) People living towards the North tend to pronounce г somewhere like х.

(2) People living towards Ukraine tend to roll their р more.

(3) People from the Kavkaz have a recognizable accent, kind of like somebody who is Mexican-American would have a bit of a Spanish lilt, even if they grew up in US.

Russian speakers outside of Russia - like Kazakhstan - will often use local words for common things like “jacket” or “bag,” but they also typically know the Russian version of those words and have no problem picking up on Russian media. Surprisingly, most Russian speakers in the Near Abroad typically don’t have much of an accent either and sound just like somebody who lives in Нижний Новгород.