Final answer:
Developing countries are categorized based on income levels, including low-income, lower-middle-income, and upper-middle-income economies, with high-income economies being an exception.
Explanation:
Developing countries (DVCs) are classified based on their income levels. The groups of developing countries include low-income economies, lower-middle-income economies, and upper-middle-income economies. The exception is high-income economies, which are not considered developing countries.
Learn more about developing countries here:
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