In this article, we will take a look at the Dividend Contenders List: Top 20 Stocks.Dividend contenders are companies that have raised their dividends every year for at least a decade, but have not yet reached 25 straight years of growth. Investors often pay attention to this group for a simple reason. These companies have shown they can keep increasing payouts through different market environments. For investors who rely on income, that kind of consistency tends to matter.Nuveen chief investment officer Sa ...