Your choices are fairly limited. Pedigree is still very important so you’ll want to go to a very good school and get very good grades. Major-wise, Finance or Economics is preferable. Even better is if you double major with a “hard” discipline like Math or Physics or an engineering.

if you want to be an investment banker, you should major in finance or something very similar to it. see if your uni offers courses related to investing that you could take

if you want to be an investment banker why would you try to major in engineering? engineers major in engineering. if you want to be an engineering major because you like engineering, why don’t you just become an engineer? they still make a lot of money, just like investors