I guess I wasn't clear.
What I'm looking for is a stem similar in design and function to the ones I mentioned but without the name or logo. Possibly something marketed by Deda, Dimension, Profile Design, Thomson, etc.
I'm experimenting with how much rise I want (0*, -2*, -4*, etc.) without buying several stems.
I can't bring myself to put a Specialized or Felt branded stem on my Litespeed. Just wouldn't look right.