Where should I intern next?

I have interned at Amazon and will be interning at a small company and another FANG. I still have one more summer to intern and am looking for suggestions on where to intern. I don't want to return to any of the companies for another internship because I want to gather as many data points as to help choose where I should work when I have to go full-time. Should I try a FinTech company like Citadel, etc? Or mid-size like Salesforce? Or do research at a University? Or just do another FANG? Note, I doubt I can actually pass the interviews for all these companies, but I'm just looking for where I should aim for next as I finally reached my dream company to intern at and don't know where to go from here, besides trying to get a return offer.