I don't remember hearing Americans talking about that style of childcare, and was wondering if it exists over there, because it's a good compromise between a nanny and a massive childcare centre. Maximum 7 kids at a time, 4 if they're under school age, usually looked after by a stay-at-home mum[1]. Ours were all nice.
[0] https://www.familydaycare.com.au/about
[1] I assume it's not always mums, but they make up the vast majority