At BotCon about twelve years ago, Hasbro claimed that the mould for Basic Rattrap was lost or broken after being used for Packrat in 1997. Insecticon and (I believe) Armordillo had suffered a similar fate. Some people say Terrorsaur/Lazorbeak is also missing, but since it's been used for Fractyl, Hydra, Terranotron and Swoop (the latter two at the same time as Hasbro was talking about the missing moulds) it's probably just a rumour/misunderstanding. That leaves Basic Optimus Prime, Razorbeast, Megatron/Iguanus, Snapper, Airazor, Claw Jaw, Snarl, Drill Bit, Powerpinch, Razorclaw, Spittor, Air Hammer, Bantor, Noctorro, Buzzclaw, Quickstrike, Terragator, Nightglider, Optimus Minor, Sonar, Stinkbomb, Scarem and Spittor all intact as far as we know. So I assume whoever put that on the wiki took an offhand comment about three Basic moulds and mistranslated it into "most if not all of the Beast Wars Basics".