I would say that at a guess, 80% of mine would be original G1 toys. Due to my obsessive behaviour in obtaining mint specimens, reissues were the way to go for some as vintage MISB were out of my price range. I'm also proud of the fact that the majority of G1 toys that I own were mine when I was a kid and that same obsessive behaviour allowed me to keep them in perfect condition even though they were played with. Only Megatron suffered slightly, but nothing a few reprolabels wouldn't fix
Your Gnaw, unless it is a KO, would be an original as it was never reissued. The Encore release of Trailbreaker has a blue visor; the original has red. Hope that helps.