The Chinn-Chapman hit factory was a European phenomenon - whether the assembly-line-manufactured-hits built largely on 50ies rock'n'roll style elements were performed by Sweet, Mud, Suzi Quatro, Smokie (less archaic rock'n'roll, more country rock influence) or Racey (back to 50ies rock'n'roll).
It's not like Chinn-Chapman didn't have hits in the US, they just didn't have that one continuous hit vehicle like Sweet or Suzi in her heyday. But these here were all Chinn-Chapman or Chapman by himself songs:
(This is basically a Hot Chocolate number written for a US act.)
(Pop hard rock version of the previous Smokie country pop number, see below.)
And of course Chapman was the man behind Blondie's stellar ascent from CBGB garage band to pop glimmerati as their stalinist, but highly effective producer.
Rob is right about the early Suzi Quatro RAK hits being speeded up for the screamy effect, but she was actually the first to grow tired of this and wanted a change of style which is why by her third album Detroit funk crept in and she sang in a lower register. That new style, however, did not repeat the chart success of the early singles. But it should find favor or at least mercy with Rob who generally likes any type of rock with black RnB influx. One day, Holländer, I tell you, we're gonna ask for that blood sample and find out how adventurous your ancestors really were!
Suzi has beccome a lot more rootsy over the decades (she was never a cutting edge artist).
(The tall young man playing the Telecaster is Richard Tuckey - nowadays also her producer making her albums sound more contemporary and less nostalgia act -, her son from her first marriage with Len Tuckey who played guitar on all her 70ies hits.)