Is the question here about objective vs. subjective standards, or do you simply want a list of those objective standards.
Defining objective and subjective is easy. If you can measure it and you come up with a concrete value (e.g., the average lifespan, percentage covered by health insurance), then it is objective. It is unaffected by the subject's point of view.
Subjective measures are indiscrete; the answers are murkier and generally more open to interpretation or the point of the view of the observer. For example, measures of one country or one group being "better off" than the other.
And then sometimes there are subjective standards that seem like they might be objective because they give you a number, or are based off objective measures. Walkability, for example, is an index score based off measures of sidewalk mileage, population density, and mixed use developments - objective measures but why does that equal a more walkable city? They were chosen subjectively.
But, if you're looking for a list of objective standards, a simple google search would suffice. I might recommend the AARP. They seem to have their heads around the topic.
Message me if you need.