which foundational do you think will be the best performer other than CSU over a 5 year period?

Very hard to predict this. However, if I were to take a stab at it, I'd guess it would either be Canadian Pacific, which I believe is at the bottom of an economic trough and at discounted valuations, or Brookfield Corporation, as the company is executing at an outstanding rate right now and continuing to grow at a market-beating pace.

That said, the entire portfolio of Foundational Stocks all serves to be greater than the sum of its parts. I like the entire list.