It would be interesting if you can name one like you describe. Even indigenous communities are not even as close.
I'm guessing you're setting the bar high based on what comes to mind when you imagine family, but sadly that's not always the case.
A former neighbour of ours found the whole COVID lockdown experience too much, both socially and economically, and it (bluntly) broke their family unit. The father became physically abusive and the family struggled to avoid foreclosure after he left.
I'm sure you're aware, I'm not religious, but the church community supported the family with food, helped repair and improve the house for sale, allowing the remainder of the family unit independence, and let them feel there were people on their side without wanting anything in return.
I'm a former primary school teacher, and have seen lots of instances of school communities providing support best provided (but sometimes absent) by families.
If you have a strong family...and extended family...this becomes icing on the cake. But some people don't really have a cake.
At a personal level, we have a family of friends who are closer and more supportive than our families, despite us having good familial relationships. To.all intents and purposes these people are family, despite a total lack of blood connection.
I'm not really suggesting 'it takes a village to raise a child'. But it does if the family unit was broken, and it can make it easier for anyone.