I've had trouble finding, by order of importance:
1) A quiet keyboard (okay, pure rubber keyboards exist and are likely the most silent option possible, but typing experience is awful)
2) A quiet and quality keyboard
3) Maybe an easy disassembly for cleaning?
Of course LED lights, no matter how much I love them for lamps and ornaments and indication, are far from needed in a keyboard (usually you pay more to get those lights, and fair enough, some have microcontroller codes for changing colors and such, but these features are not worth nearly as much as quality typing). Mechanical keyboards seem advertised as better these days, but I doubt they can be quiet, so it makes them more difficult to consider.
I'm not sure which keyboard is worst, however, having tried them, I vote for the rubber ones like this one: