I got tired of having to sort out which ores go where from mixed ore patches from scratch every time, so I made a blueprint that can just be plopped down that can sort all of the normal ores.
It doesn't use filter inserters, so there is no throughput limitation, and it can be made with only yellow belt if desired (it doesn't require any red or blue undergrounds to function.)
There are two versions, one that lines up with the normal arrangement of power poles in between rows of miners, and a compact one for those who use undergrounds to take out the power pole row.