Comparing populated with rural and religious with non religious (etc - since these things also have proven to heavily govern healthcare access and general health due to lifestyle) . . adding these because related cultures are sorely unrepresented - mostly the list is European.
Countries which we share some similarities with:
Russian Federation (broken into it's components)
For stark contrast (entirely different in every way)
Micronesia (all it's islander components)
Then focusing on states that are likely different than the rest of the US because of population / culture / religious contrasts:
And instead of ranking I'd factor out weighted averages . . . it's more accurate.
By subdividing all things and then weighing the nation based on the sum of it's parts you get a better idea of where a nation is excelling, ok, and struggling . . . to write off all nations who are economically 'less' than us as being 'all miserably failling' is possibly overlooking some crucial and beneficial facts.
Some of these countries receive a lot of support and care from other governments and religious organizations - that would be interesting to study. How much of an impact do they have: 20 years ago VS today . . . how much attention is being given to said impact. . . and so on.