Aren't Dutch MMA fighters generally known for their kickboxing? If that be the case, none of the Dutch UFC fighters could dream of carrying UFC fighter Semmy Schilt's jock strap, and you did not even mention him?????
As for overall, I go with The Reem. Rutten (IMO) wasn't even a serious UFC fighter!!!!!!!!!!!!
He had exactly the same number of UFC fights as Semmy (2).
Semmy beat UFC ex UFC HW champion Pete Williams (Mark Coleman killa), and lost to current UFC HW contender Josh Barnett.
Bas beat a .500 HW in T.K., and (?won?) like the consensus most controversial judges decision in ZUFFA UFC history.
Bas was NOT 1/2 the UFC MMA fighter that Semmy was.
PS. I know that you have heard it on Reem as British, so let me throw Mousasi in there as Iranian (I believe)!
Do you consider Melvin Manhoef Dutch or Surinamese?