Wim Crouwel would have used Helvetica. No caps.

What about Museo by Jos Buivenga. I'd say that's a very clean typeface. Or do you want soemthing from the 60s/70s?

The Dutch clean mid-century sans-serif is Mercator, see this thread.

Have a look at our collection and perhaps you’ll appreciate Nitti, a clean monospaced grotesque by Pieter van Rosmalen. Or if you’re looking for a more humanistic approach check out Flex by Paul van der Laan.

Cheers!

Good info. Thanks so much!