Mmmmmm ..
....
Also, the Lynx and the Bo105 both have semi-rigid heads. ...
Blind Bob ... could be semantics but I disagree and so do others ...
"Rigid Rotor ... This system allows the blade freedom to feather only .... etc"
(Principles of Helicopter Flight 2nd Ed. W.J Wagtendonk Chap.6 P.45)
And the Bolkow105 and Bk117 certainly have Rigid Heads with only feathering axis freedom .... NO Lead or Lag hinging.