What to look for when buying a used bike?

Hey I was just wondering if there are certain things I should ask and look for when buying a used bike. I think im gonna be going to look at an XR200, CR80, RM80, and maybe a KX80. . or something like that. . I found some stuff to check, like bearings, swingarm, oil type, how often its changed, radiator fluid, air filter, storage, type of riding, conditions, checking shocks, fork, chain, wheels, tires, seals, bars, exhaust, controls, pads, brakes - is there anything i'm missing? (I'm new to this stuff, so I don't really know that much). Thanks