You seem incredibly biased, so much so that I'm doubting if this is just a massive bait troll.
You are asking for a product, that has not at least one plastic part that if even partially replaced with something else will become more luxurious? Literally replace a tiny little chunk of the case with a gold nugget and we're done? The question only makes sense to me if you are talking about every(or the most relevant) plastic part that can be replaced being replaced, and yet your examples focus on singular usually decorative parts.
Now to the truly ridiculous assertions:
>wooden keycaps
that must be just you and LGR who are into that kind of thing, i doubt that's what crosses most people minds when they think high-end keyboard
> carbon fibre
as in carbon fiber reinforced polymer? polymer as in plastic?? this makes me doubt your definition of glass as well...
PS:
>game controller
are all crap