I do not know whether it was done intentionally, but the first look at the top chart creates the impression that the IDA gives much more funding for the programs than IBRD. A difference in reality is not so drastic. Is it a little manipulated?
Graph showing the World Bank loan by sector is quite interesting (an alternative to bar chart), but I think that one could use it when the series shifts do not disturb data comparisons year to year . In the current design it is rather difficult to compare subsequent years of funding levels for finance, health and industry sectors.