After discovering all of these recipes for lamps, torches, and other light sources, I have a suggestion for a JEI search category: "light sources", which will show all items/blocks that emit light. What do you think?

Impressive, added

How? Help me.
Or is there already an addon for this meanwhile?

I believe this is all light sources as of beta-8
https://pastebin.com/dXwEph22

Impressive, added