All that is valid,
but I’ll add a bit:
Component video
(note
NOT composite!) is another alternative which used to be common in the
US but rare in the
UK. To keep things
simple it provides quality comparable to RGB but the signal is ent
differently. Like SVideo it has a separate B&W “luminance”
signal, and the
colour is carried in two channels on a colour difference basis.
Unlike
*most* RGB signals used in
the
UK it doesn’t
need a
separate connection for sync – that is carried via the luma or
“Y” channel
IIRC.