What are they?
I asked a few friends and co-workers but no one really knew for sure. A few responses I received were:
1] They are made by different type foundries but essentially the same. (As I recall they were designed by Erik Spiekermann?)
2] Some are better used as body text and others for signage?
3] Some are used as Light and Bold sets?
Can someone out there help distinquish between them? Thank you.