Frankly, Desi was the genius behind it all and he NEVER got his proper due. The man was absolutely brilliant, inventing the three-camera technique for shooting for television, which is still used today, making sure to preserve the episodes for later broadcast (including keeping the rights to those later broadcasts). He even had DAY-CARE centers at Desi-Lu studios in the late 1950's so working mothers had a place for their children. The man all but single-handedly INVENTED the way modern television is STILL produced and had a huge number of progressive ideas.
But he's mostly known as "Lucy's husband".
True story: Desi vowed that HE would have top billing on the show and when told he'd never pull it off due to Lucy's huge ego, he just smiled. Later, when the name of the show was finalized, someone was teasing him about his failure and pointed out Desi's name didn't even appear in the show's title. Desi asked the guy, "What's the name of the show?" The guy replied, "I Love Lucy. You're not even IN the title." Desi responded by asking the guy who he thought the "I" was in the title. Of course, the "I" referred to Desi. In the title. Ahead of Lucy's name. Apparently she NEVER caught on that Desi managed to finagle top billing.
The man WAS brilliant.