There are only three steakhouses in all of WDW.
There is le Cellier, which is the least costly, and the absolute hardest to even get a reservation due mostly to the dining plan.
There is Yachtsman’s which is two credits if you’re on the dining plan and a relatively small dining room.
And there is Shula’s, the most expensive of the three and not on any dining plan because it is in the Dolphin, not a Disney owned hotel.
I wouldn’t call any of them “kid friendly” although le Cellier is probably the closest to that description, being it is inside one of the parks.
Yachtsman’s is one of the signature restaurants, so there is more of an emphasis on the meal itself. Shula’s has plenty of football memorabilia, but again, I’d say it isn’t really kid friendly so much as kid tolerant.