MIT vs caltech vs CMU vs ETH Zurich

Hi everyone! First post, so if this is the wrong place, sorry in advance.
I am an international student and is currently studying in my home country(I don’t wish to mention it). I wish to transfer to some ‘academically rigorous’ university in either North America or Europe, that is ‘highly’ research intensive. I would be grateful if you can please list the names of such universities that accept ‘international transfer students’.
It would be a bonus point if the university provides some sort of scholarship/aid.
Thanks in advance.
P.S: It would be amazing if you could also post the link of their transfer admissions page.

Your criteria are extremely broad. Private research universities in the US only take a handful of transfer students. I’d google the transfer offices and do some research first.

How much can you afford? The majority of U.S. colleges, at least, will offer very minimal aid to an international transfer student.

Money is not a problem for me.
So can you now please suggest me a few universities that actually take some international transfer students.

Eth zurich is very tough place 50% people fail at 1st sem exam.
Also it is easy to get admission in zurich if you are from Europe.Although, if you are from any other place than you have to give PCMB exam in german.
This exam is very difficult.