If one spends time searching out images of Cart's stripped back to their inner workings. It does not take long to see LOMC Cart's as an example share very similar designs as a Structure prior to assembly.
A magnet or Coil Wire can differ as well as a Body Material if used.
Styli and Armature are with differences, but a rebuild service can make these available to the customers preference.
I have my own take on where certain Cart's show their differences and are to be found in a Cartv that is substantially more in cost than another. Where it gets tricky is identifying how a $2000 model can have a Cart' produced by the same producer for 3-4 x this cost, without to much deviation from the materials selected to be used.
Again the Mutec Hayabusa and MSL Platinum come to mind.