which college options and streams would be available with JEE mains rank around 9500 in 2020? what one should opt for on two parameters, college/stream reputation and placements?

Hello.
At your rank 9500 you have many options of colleges with good stream if you don't have any idea of college so you can use our college predictor tool from the below link to predict a college which suits on your percentile with your desired branch:

Basically you should select college on the basis of both the parameter it should be college reputation and placement or your stream reputation and placement, but if you have already mindset that you will go in any particular stream then you will have to select college on the basis of its reputation and placement in your desired stream.
Best of luck.