Lear didn’t create it. He adapted a British show that had been running for a few years already.
That’s true.
To Death Us Do Part ...Johnny Speight created it
Others.
Steptoe and Son = Sanford and Son
Man About The House = Three’s Company
The Office (UK) = The Office (USA)
Men Behaving Badly (UK) = Men Behaving Badly (USA)
Strictly Come Dancing = Dancing with the Stars
Antiques Roadshow (UK) = Antiques Roadshow (USA)