There was nothin obscure about the Danny Thomas show. He was a huge star and his show was quite popular. In fact, there is a bit of a tribute to him in the character of the character of Danny Stevens, a Jewish comic with his own TV show (though Danny Thomas was actually an Armenian Catholic) played by Hank Azaria in the Marvelous Mrs. Maisel. As a sidenote the final season of The Marvelous Mrs. Maisel is excellent.
Same goes for Jerry Lewis & Danny Kaye (neither are obscure), but I do know there were some people here who never knew Danny Kaye had his own show the last time he was mentioned.
P.S. I was a big fan of Make Room for Daddy (a.k.a. The Danny Thomas Show). An obscure piece of trivia is that the Andy Griffith show was a spin-off from an episode of the Danny Thomas Show where "Danny Williams" finds himself in a rural, backwater town with an odd sheriff.