What year is your car, robinhood? (cf2/1 cat, cf3/3 cat, or jts?)
Have you checked condition of driveshafts?
Rear lower engine mounting bracket sometimes comes loose, as does the bolt holding this bracket to the actual rubber mount.
If it's a cf2 car, there's a small heatshield on the top of the downpipe where it curves around the rear engine mount, and these often break where they're welded on (gives a "tinny" rattle at certain revs).
Are the cambelt and tensioners all OK? A siezed tensioner can lead to the belt being too loose, which will cause whining noises and a "clattery" sound (especially when the engine is cold) as the belt vibrates against the cover on its' slack side (may explain 2 on your list).
A similar thing can happen with the auxiliary belt; if the belt is slightly too long, or the tensioner is worn, when the engine initially speeds up the tensioner vibrates against its stop. This produces a brief but noticeable ticking (may explain 1 on your list).
If a cat breaks up internally, the remains of the core will rattle.
Worn cams/followers are generally more audible under load, as are worn pistons and the early stages of a big end failure. Lates hope it's none of those, eh?
Hope that's given you a few ideas.