Panasonic Model Prefixes

[Outland]

Does anyone know what each prefix meant for Panasonic sets in the ‘80s and ‘90s? I’ve scoured Google, Groups, and Books but still cannot find any distinction between CT-XXX, CTN-XXX, and CTP-XXX. Some of them even share the same remote. Some of the CTPs and CTNs are Panasonic PRISM, while others don’t appear to be.

All I’ve been able to tell is SF=SuperFlat.