I've been included in the contributions to the Thread, and J Carr and needlestein have both contributed information that is quite valuable to a Thread that evolved into covering certain Styli / Cantilevers.
needlestein has made the overall Thread Discussion clearer, and as he has a very hands on experience, is most likely quite familiar with the range of styli and their forms under discussion.
For myself, I have drawn this conclusion.
If I want a Styli, referred to as a Replicant 100, I go to Ortofon and purchase a Cart' Solely from their range .
If I want a Paratrace I discuss this with ESC do learn my options.
If I want a Gyger 'S' I purchase a Cart' with this attached, or I discuss my options with a service competent and skilled in carrying out the attaching of this styli.
Any other quest for trivia information beyond this seems to not bear the fruit of knowing how to acquire the parts in question.
Decca styli does not seem to catch the attention and is overlooked in nearly all contributions, so I will pass on learning how to acquire such a styli.