I studied math and economics at a poorly ranked university, and I will graduate in the near future. I have a position lined up at a prestigious, data-heavy research institution, where I'll work with numerous economists for a few years before applying to top PhD programs (Berkeley, Chicago, MIT, Harvard, etc.) I took two courses in analysis and did well, although per the quality of my institution, the courses were not challenging.
I also worked as a research assistant and conducted self-guided researched (not published outside my university), so I have several professors willing to write detailed recommendations for me. Apart from a few hiccups in non math/econ courses, my grades are perfect.
Will the fact that my undergraduate degree comes from an unranked institution affect my chances of attending a top PhD program? Will it affect my chances even though my experience after undergrad should speak in my favor?