I’ve noticed that American movies from the 1940s or 50s have their content “toned down” when it comes to depictions of sex or violence, even in romance where the lead characters kiss (they pause every 3 seconds) with zero nudity except maybe a bra & crime or noir flicks always involving the protagonist/s winning (like the narrative shows police must be victorious rather than admitting defeat towards criminals) to list a few.
Broadcast TV is always more censored because it uses public airways, so the feds have jurisdiction… but for the purposes of this discussion of old-timey censorship, there is only the big three to worry about–cable and streaming were nary a glimmer in little Ricky’s eye.