While all the organizations listed may provide some level of financial education, the most relevant for learning how to be financially literate would be the Finance Bar. The Finance Bar is known for offering financial literacy programs and resources aimed at helping individuals improve their financial knowledge and skills.
The other organizations (the IRS, the Department of the Treasury, and Goldman Sachs) may have resources related to finance, but they do not primarily focus on financial literacy education in the same way that the Finance Bar does.