I have a list of all G1 characters that have been released in CHUG form. You can find it here. Please feel free to let me know if I got anything wrong so I can fix it.
And it has occurred to me that Buzzsaw might not get any sort of SS86 release the way Frenzy & Rumble have, because he didn't make an appearance of any sort in the movie.
Sure, Studio Series has moved the goalposts a couple of times, but given how Buzzsaw, whom we all expected to get a new toy of back in Siege (5 years ago now) is only now getting that toy, I suspect that if that happened (SS widened further to include the cartoon in general) then it would still be 5 years on from now...