Gotta love it when military aircraft manufacturers decide to make passenger aircraft in the laziest way possible, by taking a bomber design and just adding a wider fuselage, for example:

The Soviet Tupolev Tu-104

Comes from the Tu-16 medium bomber

The Tu-114

From the Tu-95

And the Tu-70 prototype

Comes from the soviet copy of the American Boeing B-29 bomber, which also had an official airliner derivative

The Boeing Stratocruiser.

And since we’re outside the iron curtain

The British Avro York

Is a heavily modified variant of the iconic Avro Lancaster heavy bomber.

Here is one better.
The Avro 691 Lancastrian was a Canadian and British passenger and mail transport aircraft of the 1940s and 1950s developed from the Avro Lancaster heavy bomber.
Sideways seating!

Aren't y'all forgetting the Boeing 307 Stratoliner?

Passenger version of the legendary B-17

Then the Swedish got involved and made a lazier version with the Felixs in the post war.