Hello... for my personal needs I've made a Multi Material Switch which I based off Material Switch.
This basically allows you to switch between 2 up to 20 materials.
Was a lot of work involving XML editing and replacing as well as hand sorting 220 inputs...

would be helpful if there was a way to sort inputs by their material groups alphanumerically.
SBS file in the attachment, depends on the two multi switches.
Free to use or distribute with Designer if the devs feel so