I don't understand what you are looking for. Individuals who have bothered to adopt or construct an "ethics", understood in the usual sense of "a code of acceptable behavior", usually TRY with greater or lesser success to behave in ways consistent with that code. On the other hand, there are those who don't have such a code, either appropriated or constructed, and behave randomly according to their whims of the moment. Religious institutions & schools generally try to inculcate some elements of whatever ethical code their priests or schoolmasters have themselves adopted (at least in principle). So, we can assume most folks have been exposed to some kind of ethics, whether they have adopted any of it or not.

Not quite sure of the scope of this question as it is endless.

At its simplest ethics can be viewed as an applied form of moral philosophy which is relative and concerns 'values' which can assist individual's to 'flourish' and achieve the 'good life'

Aristotle is probably one of the best examples of a philosopher whose theory of virtue is arguably one of the most vivid in terms of addressing the importance of ethics and its application in the life of an individual.

When viewed in a modern context it is perhaps most valuable if seen as a 'self-help guide. If followed and applied it can truly provide one with not only a 'good life' but to do so with a view to continuous flourishing.