Pew Research recently published an analysis: Trump Ratings Remain Low Around Globe, While Views of U.S. Stay Mostly Favorable. As part of this, they provided data elements that were used to compare Trump vs Obama, how Trump is viewed across nations, how the numbers change as the political views of the respondents change, as well as a comparison of Trump's numbers vs Merkel, Macron, and Xi. They make use of comparative bar charts, line charts, scatter plots, and maps to present their data.
At the end of the report, they provide information on how the data was collected and analyzed, as well as pointers to the datasets. This allows for further drill downs for the interested reader.