Joe wrote:
What do you call the Semyorka booster for Sputnik 1,2 and 3 ?


Depends what the upper stage is.
It went from the R-7 "Semyorka"/"Sputnik" to "Luna", "Vostok" "Voskhod"
"Molniya" and "Soyuz" in that order.
Luna and Vostok used basically the same small upper stage, Then the
bigger upper stage used first by Voskhod, then in a uprated form for the
Molniya comsats, then again modified for Soyuz.
The Molniya and Soyuz variants of the rocket proved long-lived.