CBS, NBC, ABC and then it had a CROSS Section with Circles for a steady screen and BEEEEEEK sound from 12:00AM to 6:00AM (Naturally Black & White).
I think one of the first TV Shows was the Ed Sullivan Show.
The only thing we watched (my father controlled what was watched and twisted the "Rabbit Ears with Tin Foil") when we did get a TV was the NEWS that came on at 6:00 PM. I think later on I remember Walter Cronkite
The pictures are from a "Magnifying TV VIEWER" 12" X 12" X 4" with a Sliding Mount that you attached and put in front of the Little B&W TV to make the picture look bigger. We all sat on the floor - Mom & Dad had chairs and we watched the TV! Distorted the picture, but did make our TV look like out new 70" 4K Flat Screen.