Well, we can start with the thread title, I suppose.
There are a huge number of "major" economic systems we could discuss - feudalism, mercantilism, fascism and communism (state-directed economies), oligarchy, capitalism and socialism, in various combinations. As defined in the cited article,
An economic system (also economic order) is a system of production, resource allocation and distribution of goods and services within a society or a given geographic area. It includes the combination of the various institutions, agencies, entities, decision-making processes and patterns of consumption that comprise the economic structure of a given community.
One of the points I've tried to make since initiating this thread is that the "forced choice" between capitalism and socialism is fallacious. There are myriad elements within "our" system that blend both and incorporate others.
I don't disagree that there is an overreliance on "growth" as a metric for success. My preferred metrics would be sufficiency and sustainability. Our current system has neither. If we focused more on those, the former effect would probably occur naturally, but need not be our goal. [As an example: sufficient employment leads to better productivity, more distributable income (via taxes and consumption), and less economic volatility.]