What datasets and interpretations best describe current global inequality trends?

[Joseph23]

I'm an economics graduate student working on my thesis, and I'm trying to analyze the most recent data on global inequality trends, specifically looking beyond simple GDP per capita to measures like the Gini coefficient and wealth distribution across and within nations over the last decade. I'm finding conflicting reports; some sources claim inequality between countries is decreasing while intra-national inequality is soaring, especially in developed economies. For researchers or policy analysts focusing on this field, what are the most reliable and up-to-date datasets or institutions (like the World Bank or OECD) you rely on, and how are you interpreting the complex interplay of factors like technological change, tax policy, and globalization in shaping these current trends?