Thanks Dan!
The only one I am missing is a clear version of this one. This last one is not the stylised font.
I'm still getting a lot of variation in TM and R.
I found this page:
http://www.ptc.com/common/ptccopy.htm
...which shows CREO on its own as R and specific product references as TM making the image above incorrect. So if we use "PTC CREO"... I assume the correct usage is to add the R to each.
Thanks again for your help.